销轴连接的铸钢件接触承压试验研究.

Experimental study on the steel casting with pin connection was carried out. Castings with three different thicknesses or 100,150 mm and 182 mm were tested and the maximum tensile force was 8 000 kN. Results show that there are plastic deformations in different degrees on castings and the area of plastic zone which is roughly shear type decreases significantly with the increase of specimens' thickness. Due to stress concentration the area where casting and pin contact directly yields quickly. The contact deformation results in stress redistribution. Then the strains of some gauges decrease and tension and compression strains are even reversed. Comparison with FEA results shows that there is a great stress concentration where casting and pin contact in early stage of loading when steel casting is under eccentric force. Results of design formulas of different countries' standards are compared with the test results and the recommended value of the strength amplification factor is 1.2. [ABSTRACT FROM AUTHOR]