第三讲结构优化的基本方法如前所述,结构优化的主要任务就是确定设计变量的值,满足所有约束条件并且使目标函数的值最小(或最大)。应该说,在六十年代初出现结构优化这个研究方向之前,人类的发明、创造和设计活动也都是围绕着这个任务来进行的。每一个设计人员都在追求做出一个符合多方面要求的好的设计来。例如,我国有 Lecture 3 Basic Methods of Structural Optimization As mentioned above, the main task of structural optimization is to determine the value of a design variable, satisfy all the constraints and minimize (or maximize) the value of the objective function. It should be said that before the research direction of structural optimization appeared in the early 1960s, the invention, creation and design activities of mankind were also carried out around this task. Every designer is in the pursuit of making a good design that meets many requirements. For example, my country has