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工程结构优化设计，是将有限元等数值分析方法和数学规划等最优化方法结合起来、优选改进结构设计方案的一种先进技术，它使得工程师不再局限于凭经验和试凑的方法去设计，而是可以科学地高效率地选择最佳设计方案，因而也是结构分析和ＣＡＤ技术向更高层次的发展。本文介绍的ＭＣＡＤＳ是一个通用性的计算机辅助结构优化设计软件，它吸收了结构优化理论研究的成果并采用了面向工程结构设计的实用化技术，具备较强的功能和适用性，已作为商品化软件转让并在许多工业部门得到成功的应用．
Optimizing design of engineering structure is to combine the numerical analysis methods such as finite element and optimization methods such as mathematical programming to optimize the advanced technology of structural design scheme and to make the engineer no longer confined to the design by experience and trial and error , But can scientifically and efficiently choose the best design solution, and thus also to a higher level of structural analysis and CAD technology. This article describes the MCADS is a universal computer-aided design optimization design software, which absorbed the results of structural optimization theory and the use of engineering-oriented structural design of practical technologies, with strong functionality and applicability, has been commercialized Software transfer and successful application in many industrial sectors.