상용 프로그램을 이용한 심해저 무한궤도 차량의 동적거동해석

Abstract

A commercial code of DAFUL using an implicit integration method is introduced to improve a solving performance for the dynamic analysis of a undersea tracked vehicle. Since the tracked vehicle model has a small mass while containing a steel-to-steel contact problem under the sea, the stable integration method are required to improve a stepsize. DAFUL has a powerful sparse solver which used in field of FEM to solve a large degree of freedom. A four-layout tracked vehicle with about 1,500 d.o.f. and 5,000 contact pair is modeled in DAFUL and another commercial program using semi-explicit integration method and the solution results and solving times are compared.