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| 1 | 封闭空间有源结构声控制中次级力的约束优化显示文摘为了解决封闭空间有源结构声控制中次级力源在约束条件下的布置问题,建立了封闭空间有源结构声控制约束优化模型,提出了一种约束条件下确定次级力源最优配置参数的方法。以封闭矩形腔为例进行仿真计算,讨论了控制力的数量对控制效果的影响,并在有限元仿真软件COMSOL中对优化结果进行了验证。结果表明:在约束条件下,采用该方法计算得到的次级力源位置和复强度的控制能获得更好的声势能控制效果,两个控制力比单个控制力能取得更大的声势能和结构动能的衰减。 | 廖金龙 朱海潮 毛荣富 侯九霄 | 2021 | 海军工程大学学报2021，33，1： | 1 |
| 2 | Structural Design Optimization Based on the Moving Baseline Strategy显示文摘Structural design optimization has always been a topic of concern in industry because good design can improve the safety and economic efficiency of structures during their service periods.Selecting the appropriate optimization algorithm is the key to solving structural optimal design problems.In this study,a new global optimization idea is proposed and named the moving baseline strategy.A baseline is initially set and will be repeatedly moving upward or downward to approach the optimal value.The proposed strategy is a simple but effective,general,and stable algorithm that can be used to solve constrained and unconstrained structural optimization problems.Different from traditional gradient-based,stochastic and heuristic algorithms,the developed algorithm provides a completely new idea to solve global or local optimization problems.Some unconstrained and constrained numerical benchmark examples are used to test the proposed methodology.In addition,structural optimal design problems of a ten-bar planar truss structure and a hypersonic wing structure(X-37B)are utilized to verify the effectiveness of the developed strategy in addressing structural design optimization problems in engineering. | Xiaojun Wang Qiang Ren Wenpin Chen Yisi Liu Lei Wang Xuyun Ding | 2020 | Acta Mechanica Solida Sinica2020，33，3： | 0 |
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