Topology And Size Optimization Of A Rocket Launcher Structure

This paper focus on a certain type of rocket launcher chassis as the research object. And it aims to make use of the structure optimization technology to make topology optimization and size optimization on chassis, which intend to design a new chassis structure that can meet the required strength demand and reduce the chassis weight.The paper firstly build a three dimensional and a finite element model on the chassis. And at the same time, it take the underframe’s actual working conditions into account to choose four typical conditions to add boundary conditions and load to the chassis. And on this basis, the paper make topology optimization in order to minimize the compliance, find reasonable material distribution on underframe structure, and take them as a reference to design the distribution form of frame beam structure; And then, this paper take the topology optimization design of the chassis for model to build the finite element model. The model select the beam wall thickness as variables, the minimization of chassis volume as goal, find the reasonable wall thickness of every frame beam, to design a new chassis structure; Finally, the paper does some structural performance analysis about the new designed chassis and compare with the performance of the original underframe structure. And as a result, it concludes that the new one not only meet the strength requirements but also reduce approximately 8.8% weight on the basis of the original chassis.