Dynamic response optimization design under harmonic base acceleration excitations of lattice filling

来源 :中国计算力学大会2018暨国际华人计算力学大会2018 | 被引量 : 0次 | 上传用户:wudouyuan
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  Additive manufacturing techniques can design and fabricate lightweight structures with complex geometries such as lattice structures.
其他文献
Hyperelastic materials containing glass micro-ellipsoids are designed to tune elastic wave propagation by pre-strain.The orientations of glass micro-ellipsoids are tuned by pre-strain to influence the
Phononic crystal(PC)is a kind of artificial composite which consists of periodically distributed patterns.Due to the repeated constituents,PC presents some novel characters in wave manipulation.
Fractional calculus has become an important topic in modeling physical phenomena with time-historical memory and spatial-correlation effects.Heavy computational cost and memory-storage requirement of
The second-order two-scale(SOTS)asymptotic piezoelectric model is presented for the axisymmetric composites.The structure considered is assumed to be homogeneous in circumferential direction,and have
The famous three-body problem can be traced back to Isaac Newton in the 1680s.In the 300 years since this “three-body problem” was first recognized,only three families of periodic solutions had been f
This paper presents a novel concurrent topology optimization approach for finding the optimum topologies of macrostructures and their corresponding parameterized lattice microstructures in a integrate
Multi-material structural topology optimization is to find the best distribution of more than one materials under given loads and constraints,which is an effective means of conceptual design of lightw
For energy absorption structures of a particular material,changing their geometrical dimensions can generally cause great change of their energy absorption capacity.
防爆毯是反恐处突中常用的临时防爆装置,通常由软质复合材料加工而成。为了探索防爆毯在近场爆炸载荷作用下的性能及其吸能机理,采用有限元法,结合纤维复合材料连续介质损伤本构模型,数值模拟研究了软质防爆毯和围栏在爆炸冲击作用下的动态响应,分析了材料的损伤机理和结构的变形失效模式,获得了冲击波的传播与衰减规律,并探讨了泄爆孔的设计对防爆毯防爆性能的影响,可为防爆产品的设计和优化提供参考。
在车辆工程、机械工程以及航空航天等领域中,由于外部激励、机构运转及摩擦等因素的存在,系统都会受到振动负面效应的影响,因此,通常会设计各种隔振结构来解决或缓解这类问题。本文以一个简易的隔振结构为对象,分别研究了设备布局和频带约束两类问题对隔振结构拓扑优化结果的影响。