Abstract: On the basis of supposes and test, load mathematical expressions of compressed rubbish to rubbish vehicle structure is given, so that the validity of finite element analysis is ensured. Using guide-weight method, on basis of finite element analysis, structural optimization of the compressed rubbish vehicle is successfully actualized. Through the structural optimization, with the same rubbish loadage, the structural weight of the compressed rubbish vehicle is lightened 29.3%, and the maximal stress decreased from 504 MPa to 176 MPa.

Key words: ANSYS software, Compressed rubbish vehicle, Finite element analysis, Guide-weight method, Load expression of compressed rubbish, Structural optimization, Abrasive resistance, Corrosion resistance, Ferritic stainless steel, Laser cladding, Microstructure