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ADAPTIVE STIFFNESS DESIGN FOR MULTI-MATERIAL STRUCTURAL SYSTEM

机译:多材料结构系统的自适应刚度设计

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摘要

Stiffness is one of basic characteristics of structural system, and is an important feature for structural design problems. Although it has been often recruited as the design objective or constraints, the structural optimality attained has guarantee only for the mechanical conditions considered at the design stage. The adaptive stiffness design for force-dependent stiffness is a concept to tailor the structural stiffness in accordance with the external load applied. The passive adaptive stiffness has been realized by using single conventional material only. In this article, it is evolved to the active one that enables us to switch the force-dependent stiffness actively in part in the context of the multi-material structural system. The topology design problem is formulated for the distribution of conventional and functional materials under the constraints of mean compliance and its switching point as the structure. The effectiveness of the proposed structural design concept is examined through numerical case studies solved by the SIMP method of topology design.
机译:刚度是结构系统的基本特征之一,是结构设计问题的重要特征。虽然它经常被招募为设计目标或限制,但达到的结构最优性仅用于在设计阶段考虑的机械条件。用于力依赖性刚度的自适应刚度设计是根据施加的外部负荷来定制结构刚度的概念。仅通过使用单一常规材料来实现被动自适应刚度。在本文中,它被进化到有效的活动,使我们能够在多重材料结构系统的上下文中主动地切换力相关的刚度。拓扑设计问题被配制用于在平均合规的约束下分布常规和功能材料,以及其切换点作为结构。通过SIMP拓扑设计方法解决的数值案例研究来检查所提出的结构设计理念的有效性。

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