TY - JOUR AU - 박경진 DA - 2015/01 PY - 2015 UR - http://www.sciencedirect.com/science/article/pii/S0045782514003855 UR - http://hdl.handle.net/20.500.11754/35680 AB - A novel method for nonlinear dynamic response topology optimization is proposed using the equivalent static loads (ESLs) method. The ESLs are the loads that generate the same response field of linear static analysis as that of nonlinear dynamic analysis at each time step. In the proposed procedure, nonlinear dynamic analysis is performed, ESLs are made and linear static topology optimization is carried out with the ESLs. The process cyclically proceeds until the convergence criterion, which is specifically defined for this problem, is satisfied. Since the density method for topology optimization is utilized, the low-density finite elements can cause mesh distortion in nonlinear dynamic analysis. Transformation variables are introduced for a new update method for the incorporating process of the topology results into nonlinear dynamic analysis. Also, a new objective function is proposed to minimize the peaks of the time dependent transient responses. A couple of standard problems and a practical problem are solved to validate the proposed method. (C) 2014 Elsevier B.V. All rights reserved. PB - ELSEVIER SCIENCE SA KW - Nonlinear dynamic response topology optimization KW - Structural optimization KW - Equivalent static loads KW - ELEMENT CONNECTIVITY PARAMETERIZATION KW - COMPLIANT MECHANISMS KW - DESIGN KW - CRASHWORTHINESS TI - Nonlinear dynamic response topology optimization using the equivalent static loads method VL - 283 DO - 10.1016/j.cma.2014.10.015 T2 - COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING ER -