3103 エンジンシリンダヘッドの温度分布を考慮した形状最適化

概要

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Thermal loading factors are critical in diesel engines, since they affect the maintenance of peak performance and operational durability in competitive scenarios, and must be addressed to fulfill market demands for increased power, reduced weight and superior economy. A cylinder head is one of the most critical engine parts because it must endure various kinds of mechanical and thermal loads during a lifetime of operating cycles, and achieving advanced designs currently depends upon sophisticated evaluations of engine component durability with respect to thermal loading. Therefore, structural optimization concerning thermal loading is a crucial requirement for cylinder head designs that must endure thermal loading. In this paper, an application of shape optimization method for cylinder head designs considering thermal effect, which contains shape dependency on temperature distribution in a cylinder head, is reported using finite element method (FEM) and optimization algorithms. In addition, mesh-morphing technology is applied for updating design variables and initial setting of design variables are determined by the design of experiment (DOE).
一般社団法人日本機械学会の論文
2008-09-26