Design and strength analysis of structural parts of an exhaust gas heat exchanger

摘要

This paper presents static and dynamic structural analyses and design optimization of an exhaust gas heat exchanger. Analyses were carried out with FEM software to examine the heavily mechanical and thermal loaded heat exchanger and to support the development of a design guideline. After the determination of geometry and function, the properties of the material and the disposition of the load condition, different FE models are generated. Simulations are performed to check the behavior and the degree of utilization under static mechanical, dynamic mechanical and stationary thermal loads. In this respect the examination of the fastening system is of prime importance. Finally, the results of the different analyses are summarized in an improved fastening system. This approach is also applicable to other process equipment with a complex load condition.