基于子结构的内力约束连续体拓扑优化

发布时间：2018-09-08 08:46

【摘要】：通过拓扑优化可以得到传力路径,不同传力路径对应不同内力载荷.如果将内力载荷作为目标或约束进行拓扑优化,可以得到满足不同需求的传力路径,为拓扑优化的发展提供新思路和新方法.为了得到不同内力载荷需求的传力路径,基于子结构法将结构分开使内力暴露出来.以结构质量最小为目标,以内力为约束建立拓扑优化模型,基于独立、连续、映射(independent,continuous,mapping,ICM)方法和单位载荷法将内力显式化,通过累加获得需要控制的传力路径上的内力,通过迭代调整2个路径上的内力使其比值达到一个稳定的值,从而获得满足内力约束的传力路径.算例表明:不同的内力约束可以得到不同的传力路径.
[Abstract]:The transmission path can be obtained by topology optimization, and different transmission paths correspond to different internal force loads. If the internal force load is used as the target or constraint to optimize the topology, the transmission path can be obtained to meet the different requirements, which provides a new way of thinking and a new method for the development of topology optimization. In order to obtain the transmission path of different internal force loads, the structure is separated by substructure method to expose the internal force. Taking the minimum mass of structure as the goal and the internal force as the constraint, the topological optimization model is established. Based on the independent, continuous, mapping (independent,continuous,mapping,ICM) method and the unit load method, the internal force on the path of the force transfer that needs to be controlled is obtained by the accumulation of the internal force. The internal forces on the two paths are adjusted iteratively to reach a stable value, and the force transfer paths satisfying the internal force constraints are obtained. An example shows that different internal force constraints can obtain different paths of force transfer.
【作者单位】：北京工业大学机械工程与应用电子技术学院;University
【基金】：北京市教育委员会资助项目(KM201110005014) 北京市科协金桥工程种子资金资助项目(ZZ16001) 国外访问学者研修培训资助项目(067145301400)
【分类号】：O342

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