FrontISTRとスパコン「富岳」を活用した最適設計システム構築

抄録

Computer-aided Engineering (CAE) becomes increasingly important in product development processes. To improve design quality and reduce development period, we aim to utilize large-scale computing environments such as public supercomputers and cloud computing services. In this report, we tested an open-source solver FrontISTR that has no license restrictions and verified its functions with chain tensile model. As a result, FrontISTR can calculate results comparable to that of commercial solvers in less time. We also built a system to optimize design geometry embedded a FrontISTR and using the supercomputer Fugaku. By operating the constructed system, we could find dimensions that reduce the mass of the chain components by 7.2% without increasing the maximum principal stress. On the other hand, since the pre-processing could only be performed sequentially, the process was not accelerated through multi-condition parallel calculations. In addition, FrontISTR calculations, which were stable on systems with Intel or AMD CPUs, became unstable when executed on Fugaku.