Article(id=1228046476773879834, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228046469559681568, articleNumber=null, orderNo=null, doi=10.16385/j.cnki.issn.1004-4523.2024.02.009, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1653494400000, receivedDateStr=2022-05-26, revisedDate=1657555200000, revisedDateStr=2022-07-12, acceptedDate=null, acceptedDateStr=null, onlineDate=1770718696063, onlineDateStr=2026-02-10, pubDate=1709049600000, pubDateStr=2024-02-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1770718696063, onlineIssueDateStr=2026-02-10, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1770718696063, creator=13701087609, updateTime=1770718696063, updator=13701087609, issue=Issue{id=1228046469559681568, tenantId=1146029695717560320, journalId=1225147924628267009, year='2024', volume='37', issue='2', pageStart='191', pageEnd='364', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1770718694343, creator=13701087609, updateTime=1770795432451, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1228368332575928712, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228046469559681568, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1228368332575928713, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228046469559681568, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=267, endPage=275, ext={EN=ArticleExt(id=1228046477163950118, articleId=1228046476773879834, tenantId=1146029695717560320, journalId=1225147924628267009, language=EN, title=Flutter reliability optimization method of composite panels considering non-probabilistic uncertainties, columnId=null, journalTitle=Journal of Vibration Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=

Recursive Least Squares algorithm is widely adopted in the field of micro-vibration adaptive control because of its simplicity and speed. Due to the particularity and complexity of the disturbance environment in the micro-vibration active control application,the robustness of the parameter adaptive algorithm used in the micro-vibration control needs to be considered. For the Multiple-Input Multiple-Output (MIMO) active vibration control system,this paper presents a MIMO robust parameter adaptive algorithm based on an Infinite Impulse Response (IIR) filter. This robust parameter adaptive algorithm takes advantage of the dead zone and normalization. The deducing process and convergence analysis of the robust parameter adaptive algorithm are illustrated in detail. A 3-DOF real time micro-vibration control experimental platform has been constructed. Comparison are provided with sine disturbance,double sine disturbance and broadband disturbance. Experimental results confirm the feasibility and robust of the proposed algorithm.

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不确定因素普遍存在于气动弹性系统的优化设计中,但传统气动弹性优化设计技术并未考虑材料属性、大气环境、几何尺寸等不确定因素,存在最优化目标对设计参数变化敏感,也可能会发生预期之外的颤振失效。基于此,本文通过对传统优化模型中目标函数的鲁棒性处理和对约束条件的可靠性处理,发展了计及可靠性与鲁棒性的区间优化模型,并将该优化模型应用于气动弹性系统的优化设计中。针对超声速气流下的复合材料层合板和蜂窝夹层板结构进行了考虑不确定性的颤振优化设计,在满足颤振约束指标的条件下,实现了结构减重的设计目标。

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郑宇宁(1990—),男,博士,工程师。 E-mail:

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郑宇宁(1990—),男,博士,工程师。 E-mail:

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Beijing: National Defense Industry Press, 2005., articleTitle=null, refAbstract=null)], funds=[Fund(id=1228046533443121559, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228046476773879834, awardId=12102055, language=CN, fundingSource=国家自然科学基金资助项目(12102055), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1228046527155859716, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228046476773879834, xref=null, ext=[AuthorCompanyExt(id=1228046527172636933, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228046476773879834, companyId=1228046527155859716, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Science and Technology on Space Physics Laboratory,Beijing 100076,China), AuthorCompanyExt(id=1228046527193608454, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228046476773879834, companyId=1228046527155859716, 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Nominal values and interval bounds of uncertain parameters

, figureFileSmall=null, figureFileBig=null, tableContent=
E1/GPaE2/GPaG12/GPa/(kg⋅m-3)/(kg⋅m-3)/(m⋅m-1)
名义值150.09.07.10.3016000.413299.0
区间边界[149.9,150.1][8.9,9.1][7.0,7.2][0.29,0.31][1590,1610][0.410,0.416][298.9,299.1]
), ArticleFig(id=1228046532793004420, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228046476773879834, language=CN, label=表1, caption=

不确定参数的名义值及区间边界

, figureFileSmall=null, figureFileBig=null, tableContent=
E1/GPaE2/GPaG12/GPa/(kg⋅m-3)/(kg⋅m-3)/(m⋅m-1)
名义值150.09.07.10.3016000.413299.0
区间边界[149.9,150.1][8.9,9.1][7.0,7.2][0.29,0.31][1590,1610][0.410,0.416][298.9,299.1]
), ArticleFig(id=1228046532864307590, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228046476773879834, language=EN, label=Tab.2, caption=

Comparison of optimization results

, figureFileSmall=null, figureFileBig=null, tableContent=
初始值0.25000.25000.023041.44×10-6
安全系数法0.13470.06740.009315.82×10-7
区间优化法0.17220.02010.008865.54×10-7
), ArticleFig(id=1228046532931416456, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228046476773879834, language=CN, label=表2, caption=

优化结果对比

, figureFileSmall=null, figureFileBig=null, tableContent=
初始值0.25000.25000.023041.44×10-6
安全系数法0.13470.06740.009315.82×10-7
区间优化法0.17220.02010.008865.54×10-7
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The material properties of the honeycomb sandwich panel

, figureFileSmall=null, figureFileBig=null, tableContent=
E1/GPaE2/GPaG12/GPa/(kg⋅m-3)/℃/℃
织物59.0561.903.120.081650-3×10-72.81×10-5
蜂窝0.640.670.060.3072.800
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蜂窝夹层板材料属性

, figureFileSmall=null, figureFileBig=null, tableContent=
E1/GPaE2/GPaG12/GPa/(kg⋅m-3)/℃/℃
织物59.0561.903.120.081650-3×10-72.81×10-5
蜂窝0.640.670.060.3072.800
), ArticleFig(id=1228046533132743054, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228046476773879834, language=EN, label=Tab.4, caption=

Nominal values and interval bounds of uncertain parameters

, figureFileSmall=null, figureFileBig=null, tableContent=
E1/GPaE2/GPaG12/GPa/℃/℃
名义值59.0561.903.120.08-3×10-72.81×10-5
区间边界[58.05,60.05][60.9,62.9][3.02,3.22][0.079,0.081][-3.01×10-7,-2.99×10-7][2.80×10-5,2.82×10-5]
), ArticleFig(id=1228046533199851920, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228046476773879834, language=CN, label=表4, caption=

不确定参数的名义值及区间边界

, figureFileSmall=null, figureFileBig=null, tableContent=
E1/GPaE2/GPaG12/GPa/℃/℃
名义值59.0561.903.120.08-3×10-72.81×10-5
区间边界[58.05,60.05][60.9,62.9][3.02,3.22][0.079,0.081][-3.01×10-7,-2.99×10-7][2.80×10-5,2.82×10-5]
), ArticleFig(id=1228046533262766482, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228046476773879834, language=EN, label=Tab.5, caption=

Comparison of optimization results

, figureFileSmall=null, figureFileBig=null, tableContent=
x1/mmx2/mmx3/mmx4/mmx5/mmx6/mmx7/mmMc/kgΔM/kg
初始值0.220.220.220.220.220.2293.7013.340.1338
安全系数法0.280.250.230.280.180.2180.0012.650.1273
区间优化法0.210.210.160.160.200.1780.0011.390.1145
), ArticleFig(id=1228046533334069652, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228046476773879834, language=CN, label=表5, caption=

优化结果对比

, figureFileSmall=null, figureFileBig=null, tableContent=
x1/mmx2/mmx3/mmx4/mmx5/mmx6/mmx7/mmMc/kgΔM/kg
初始值0.220.220.220.220.220.2293.7013.340.1338
安全系数法0.280.250.230.280.180.2180.0012.650.1273
区间优化法0.210.210.160.160.200.1780.0011.390.1145
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考虑非概率不确定性的复合材料壁板颤振可靠性优化方法
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郑宇宁 , 王一凡 , 王淑玉 , 刘晓华 , 杨鑫鑫
振动工程学报 | 2024,37(2): 267-275
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振动工程学报 | 2024, 37(2): 267-275
考虑非概率不确定性的复合材料壁板颤振可靠性优化方法
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郑宇宁 , 王一凡, 王淑玉, 刘晓华, 杨鑫鑫
作者信息
  • 空间物理重点实验室,北京 100076
  • 郑宇宁(1990—),男,博士,工程师。 E-mail:

Flutter reliability optimization method of composite panels considering non-probabilistic uncertainties
Yu-ning ZHENG , Yi-fan WANG, Shu-yu WANG, Xiao-hua LIU, Xin-xin YANG
Affiliations
  • Science and Technology on Space Physics Laboratory,Beijing 100076,China
出版时间: 2024-02-28 doi: 10.16385/j.cnki.issn.1004-4523.2024.02.009
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不确定因素普遍存在于气动弹性系统的优化设计中,但传统气动弹性优化设计技术并未考虑材料属性、大气环境、几何尺寸等不确定因素,存在最优化目标对设计参数变化敏感,也可能会发生预期之外的颤振失效。基于此,本文通过对传统优化模型中目标函数的鲁棒性处理和对约束条件的可靠性处理,发展了计及可靠性与鲁棒性的区间优化模型,并将该优化模型应用于气动弹性系统的优化设计中。针对超声速气流下的复合材料层合板和蜂窝夹层板结构进行了考虑不确定性的颤振优化设计,在满足颤振约束指标的条件下,实现了结构减重的设计目标。

颤振  /  复合材料壁板  /  非概率  /  鲁棒性  /  优化设计

Recursive Least Squares algorithm is widely adopted in the field of micro-vibration adaptive control because of its simplicity and speed. Due to the particularity and complexity of the disturbance environment in the micro-vibration active control application,the robustness of the parameter adaptive algorithm used in the micro-vibration control needs to be considered. For the Multiple-Input Multiple-Output (MIMO) active vibration control system,this paper presents a MIMO robust parameter adaptive algorithm based on an Infinite Impulse Response (IIR) filter. This robust parameter adaptive algorithm takes advantage of the dead zone and normalization. The deducing process and convergence analysis of the robust parameter adaptive algorithm are illustrated in detail. A 3-DOF real time micro-vibration control experimental platform has been constructed. Comparison are provided with sine disturbance,double sine disturbance and broadband disturbance. Experimental results confirm the feasibility and robust of the proposed algorithm.

flutter  /  composite panel  /  non-probabilistic  /  robustness  /  optimization design
郑宇宁, 王一凡, 王淑玉, 刘晓华, 杨鑫鑫. 考虑非概率不确定性的复合材料壁板颤振可靠性优化方法. 振动工程学报, 2024 , 37 (2) : 267 -275 . DOI: 10.16385/j.cnki.issn.1004-4523.2024.02.009
Yu-ning ZHENG, Yi-fan WANG, Shu-yu WANG, Xiao-hua LIU, Xin-xin YANG. Flutter reliability optimization method of composite panels considering non-probabilistic uncertainties[J]. Journal of Vibration Engineering, 2024 , 37 (2) : 267 -275 . DOI: 10.16385/j.cnki.issn.1004-4523.2024.02.009
通常可采用安全系数方法解决不确定性环境下气动弹性系统的优化问题,该方法的优点是操作简单且具有普适性,易于实现复杂系统的寻优,但由于没有量化表征不确定因素对系统稳定性的影响,可能导致设计保守或存在潜在失效风险。因此,如何在设计之初考虑不确定因素的影响,是当前气动弹性设计领域关注的热点问题。
近年来,考虑不确定性的气动弹性系统优化设计引起了国内外学者的关注,目前主要基于可靠性和鲁棒性设计思想进行不确定性优化设计。在基于可靠性的气动弹性优化设计方面,Zingales等1考虑了弹性模量的不确定性,建立了一种混合气动弹性优化与反优化的双层级优化模型。Allen等2-3考虑设计变量、工况参数和模型参数中的不确定性,对三维机翼结构进行了气动/结构耦合优化设计。Missoum等4建立了面向非线性气动弹性系统的可靠性优化模型,并以极限环振荡失效可能度为约束指标进行了优化设计。Nikbay等5建立了基于可靠性的多学科优化模型,对机翼结构进行了气动弹性优化设计。Stanford等6通过在优化过程中引入颤振失效概率,对超声速气流下的壁板厚度进行了优化设计。Kusano等7-8考虑了来流速度的随机性,建立了三种计及概率颤振约束的可靠性优化模型。Suryawanshi等9考虑设计变量的随机性,针对矩形悬臂机翼分别进行了静气弹和动气弹可靠性优化。
在基于鲁棒性的气动弹性优化设计方面,Wan等10提出了一种针对机翼结构的双层级优化方法。Mallick等11提出了多目标鲁棒优化算法,针对后缘襟翼开展了以降低气动弹性响应为目标的鲁棒优化设计。Scarth等12提出了基于概率可靠性和鲁棒性的不确定性优化方法,对复合材料机翼结构进行了气动弹性优化设计。Liu等13考虑了来流马赫数的不确定性,对可变弯度襟翼结构进行了鲁棒优化。肖志鹏等14基于遗传-敏度混合优化算法对复合材料机翼结构进行了鲁棒优化设计。张军红等15-16对包含概率和区间约束的复合材料机翼进行了颤振优化设计。杨超等17提出了一种考虑机动载荷不确定性的气动弹性优化方法。
当前研究主要集中在随机不确定性优化领域。然而,当不确定参数样本信息有限或难以获取时,无法获得足够的样本参数来建立随机模型。此时,需采用非概率模型对不确定参数进行量化表征18-20,但目前基于非概率模型进行气动弹性优化的研究还相对较少。此外,对于不确定性优化模型的约束条件和目标函数通常采用可靠性方法和鲁棒性方法进行处理,如何建立同时包含可靠性或鲁棒性的混合不确定性优化模型,并将其应用于气动弹性系统的优化设计中还亟待解决。
本文采用非概率区间方法对不确定因素进行量化表征,并对优化目标和约束条件进行鲁棒性和可靠性处理,在此基础上建立计及可靠性与鲁棒性的区间优化模型,并将其应用于复合材料层合板结构和蜂窝夹层板结构的颤振优化设计中,通过与传统安全系数法优化结果相比较,验证该方法的有效性和可行性。
一般地,多自由度气动弹性系统运动方程可以表示为:
式中  分别表示结构的质量矩阵、阻尼矩阵和刚度矩阵;分别代表节点的加速度、速度和位移列阵,t为时间变量;为气动力矩阵。
颤振分析时通常对振幅进行线性化假设,即如果振幅足够小,则认为气动力响应与结构位移响应之间存在线性关系。根据该假设,可表示为:
式中  为气动阻尼矩阵;为气动刚度矩阵。
将式(2)代入式(1)可得:
假设,代入式(3)可得:
式中  为初始位移向量。
式(4)可以改写为以为特征值的广义特征值方程:
式中  为特征向量。
假设维矩阵,维矩阵,则利用式(5)可以求得2n个特征值
式中  为第i阶振动频率;为阻尼比。
根据系统稳定性判定准则可知,气动弹性系统不发生颤振的条件是所有特征值实部均小于0,可表示为:
式中 Re表示特征值的实部。
将所有特征值最大实部记为,即
因此,系统不发生颤振的条件可表示为:
一般地,优化设计问题可以表示为:
式中  f为目标函数;为设计变量形成的向量;为第i个确定性约束条件;为约束的容许值;分别为第k个设计变量的下界和上界;为确定性约束条件的个数;为设计变量的个数。
考虑不确定性的优化模型可以表示为:
式中  为不确定参数向量;表示第j个考虑不确定性的约束条件;为约束的容许值;为不确定性约束条件的个数。
对于区间不确定参数,需要在贫信息、少数据的条件下采用椭球方法、信息熵方法或灰度方法等手段对其区间边界进行确定21-22。采用区间变量对不确定参数进行定量表征,则式(11)中的不确定性优化模型可以改写为:
在此基础上,同时考虑设计变量的不确定性,则上式可以转化为:
式中  为考虑设计偏差的设计变量;为设计变量偏差系数,其表示由于生产、加工、制造工艺不稳定性导致的结构几何尺寸等设计变量存在的尺寸偏差。
对式(13)中目标函数和约束条件进行鲁棒性和可靠性处理,则式(13)可以转化为计及可靠性与鲁棒性的区间优化模型:
式中  为目标函数中心值;为目标函数的区间半径,通过对其优化可以在降低目标函数的同时减小其对不确定参数产生的波动;表示可靠度算子;为第j个区间约束应满足的区间可靠度。
图1所示,A点为传统确定性优化的最优点,B点为鲁棒性优化的最优点,可以看出鲁棒性优化在追求性能最优的同时,尽可能地减小由不确定性导致的性能波动(),即充分降低目标性能对不确定参数的敏感性,实现性能稳健的设计目标。
图2中,rx)表示约束条件。从图2中可以看出,确定性优化最优解(A点)通常位于可行域边界处,在不确定性因素影响下,约束条件会发生平移,使A点位于可行域之外,而采用可靠性处理后得到的最优解(B点)仍然在可行域范围内,可以满足可靠性指标要求。
采用加权因子法将式(14)中的多目标优化问题转化为:
式中  为加权因子。考虑到在量纲上存在的差异,采用归一化方法对优化模型式(15)进行处理:
式中  均为常量。
本文采用如下的收敛准则进行优化收敛的判定23
式中  表示第k步迭代后目标函数的取值。
考虑区间参数时,用表示区间变量,则系统功能函数L可以表示为:
式中  l表示区间变量的总个数。
根据可靠性理论可知,功能函数决定了系统的安全状态,若,则系统处于安全状态;若,则系统处于不可靠或失效状态。因此,系统的区间可靠度表示为约束条件的可能性大小p,即
对气动弹性系统颤振可靠度进行计算时,可建立功能函数:
式中  表示系统处于颤振临界状态时的取值。
根据式(9)可知,,则式(20)可以表示为:
考虑区间不确定性时,在一定区间内变化,可表示为:
式中  分别为的下界和上界,利用Bernstein多项式方法可得到24
当不确定性存在时,与0可能存在如图3所示的干涉情况,此时系统存在颤振失效风险,其对应的非概率颤振可靠度R的计算公式为:
考虑如图4所示的超声速气流中的复合材料层合板结构,几何尺寸为,边界条件为四边简支,层合板上表面作用有平行于层合板表面的超声速气流。图5所示为复合材料层合板铺层材料坐标系,其中气流沿x轴方向,1和2分别表示平行于和垂直于纤维方向。
忽略结构阻尼,基于经典层合板理论和基于活塞理论的气动力模型,可以建立气动弹性方程:
式中  表示为25
式中:
式中  为层合板密度;分别为xyz三个方向位移对应的模态函数,对于四边简支边界条件,模态函数的分量形式可分别表示为25
式中  ij分别表示沿xy方向的模态阶数。
表示为:
式中:
式中  分别为拉伸刚度、耦合刚度和弯曲刚度系数26
分别表示为:
式中:
式中  分别为复合材料层合板沿纤维方向和垂直纤维方向的弹性模量;为泊松比;为来流密度;为来流速度;为来流马赫数。
利用区间向量对其进行量化表征,参考文献数据给出各参数的名义值和区间边界2427,如表1所示。其中,为剪切模量,为声速。
铺层方式为,将单层厚度作为设计变量,记为,单层厚度初始值为0.25 mm,设计偏差。以复合材料层合板结构减重作为优化目标,以来流速度条件下的颤振可靠度作为约束条件,建立区间优化模型:
式中  为结构质量的区间中心值;为结构质量的区间半径。
式(34)可以改写为:
式中 
同时,利用安全系数法建立的优化模型可表示为:
式中  表示区间变量的中心值;安全系数n=1.15。
优化结果如图6~9表2所示。
以上优化结果表明,在满足可靠度约束的条件下,采用区间优化法能够降低层合板结构总质量的区间中心值,同时降低总质量的区间半径。区间半径的减小代表了结构重量波动范围更小,即说明采用区间优化法得到的结构设计方案鲁棒性优于安全系数法得到的结构设计方案。
考虑如图1011所示的蜂窝夹层板模型,结构主体由蜂窝夹层复合材料面板结构组成,气流方向为沿前缘到后缘,且不考虑气流偏角,约束条件为左端面固支。复合材料蜂窝夹层结构铺层顺序为[45°/45°/0°/45°/0°/45°/0°/45°/0°/45°/0°/45°/45°],其中中心层为蜂窝,其余层材料为织物,材料属性如表3所示,其中分别表示沿纤维方向和垂直纤维方向的热膨胀系数。
本算例主要采用商业软件Patran建立结构有限元模型,如图12所示,采用基于活塞理论的气动力模型,利用Flightloads/Nastran进行颤振稳定性分析。在材料参数方面,主要考虑织物性能参数的分散性,同时设计偏差,参数的名义值和区间边界如表4所示。
将织物层及蜂窝层厚度作为设计变量,记为,其中织物层初始单层厚度为0.22 mm,蜂窝层初始厚度为93.7 mm,来流密度
以蜂窝夹层结构减重作为优化目标,将来流速度、温度增量条件下结构不发生颤振失效作为约束条件,建立区间优化模型:
式中 
同时,基于安全系数法的优化模型可表示为:
式中 安全系数n=1.15。
利用以上两种方法进行优化设计,优化结果如图13~16表5所示。
对比优化结果可以看出,采用安全系数法和区间优化法均可在满足颤振可靠度约束的条件下降低蜂窝夹层板结构重量。当采用安全系数法时,结构重量区间中心值降低幅度约为5.17%;采用区间优化法时,结构重量区间中心值降低幅度约为14.62%。同时,对比结构重量区间半径可以看出,采用区间优化法获得的结构重量波动范围比安全系数法得到的结构重量波动范围更小,即表明通过优化降低了结构重量对不确定参数的敏感度,验证了本文所建立的区间优化方法的有效性。
充分考虑设计变量及外输入参数的不确定性,通过对约束条件和目标函数进行可靠性和鲁棒性处理,构建了包含可靠性和鲁棒性的非概率区间优化模型。在此基础上,将非概率区间优化法与气动弹性系统相结合,开展了面向复合材料层合板和蜂窝夹层板结构的颤振优化设计,在满足颤振可靠度约束条件的前提下,有效降低了结构重量及其波动范围。通过与传统安全系数设计方法的对比,验证了上述优化方法的优越性,为解决不确定性环境下复合材料层合板结构颤振优化问题提供了新途径。
  • 国家自然科学基金资助项目(12102055)
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2024年第37卷第2期
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doi: 10.16385/j.cnki.issn.1004-4523.2024.02.009
  • 接收时间:2022-05-26
  • 首发时间:2026-02-10
  • 出版时间:2024-02-28
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  • 收稿日期:2022-05-26
  • 修回日期:2022-07-12
基金
国家自然科学基金资助项目(12102055)
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    空间物理重点实验室,北京 100076
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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