METHOD FOR SELECTING NODE SET TO ANALYZE SENSITIVITY OF STRESS CONSTRAINT FUNCTION AND METHOD FOR ANALYZING SENSITIVITY OF STRESS CONSTRAINT FUNCTION USED IN STRESS-BASED TOPOLOGY OPTIMIZATION USING THE SAME

摘要

A method for selecting a node set to analyze the sensitivity of a stress constraint function according to the present invention conducts the sensitivity analysis of a stress constraint function used in a stress-based topology optimization procedure and comprises the steps of: selecting a first node, which is not included in an existing node set, among nodes constituting a current element on an connectivity information table provided by tailored finite-element analysis software; storing the selected first node in a current node set; storing, in an exclude node set, nodes, which are not included in the current node set, among the nodes constituting the current element; searching an element including the nodes included in the current node set on the connectivity information table; additionally storing, in the exclude node set, all other nodes, which are not included in the current node set, among nodes constituting the searched element; and storing nodes satisfying conditions in the current element in the current node set and the exclude node set. Thus, the repeated number of times of the analysis can be reduced, and the sensitivity of p-norm stress used as a stress constraint function in the stress-based topology optimization procedure can be analyzed by using only analysis result information provided by the tailored finite-element analysis software. [Reference numerals] (1100) Initialize a current element, a current node set, and an exclude node set; (1200) Select a first node, which is not included in an existing node set, among nodes constituting the current element on an connectivity information table; (1300) Store the selected first node in a current node set; (1400) Store, in the exclude node set, nodes, which are not included in the current node set, among the nodes constituting the current element; (1500) Search an element including the nodes included in the current node set on the connectivity information table; (1600) Store additionally, in the exclude node set, all other nodes, which are not included in the current node set, among nodes constituting the searched element; (1700) Select a next element as a current element; (1800) Store nodes satisfying conditions in the current element in the current node set and the exclude node set; (1900) Declare the current node set as a new set of node sets; (2000) All nodes selected?; (AA) Start; (BB) End