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This paper studies the shunting characteristics of resistance spot welding in unequal-thickness 2219 and 5A06 aluminum alloys when three spot welds are arranged in a triangular pattern. Experiments and numerical simulations were performed to analyze the shunting effect. Results showed that the third weld had the smallest weld diameter owing to the shunting effect of the previous two welds. The first...
Centrifugal compressor is the vital part of many mechanical systems. The present paper deals with the simulation and the analysis of the fluid performance in two subsonic compressor stages under different rotational speed. The configurations used for the study is two subsonic centrifugal compressors with 60mm and 70mm diameter impeller wheels respectively. Numerical simulation is carried out with...
Inversion imaging of nugget in resistance spot welding (RSW) is a new developing method of monitoring the welding quality in RSW in recent years, which is based on the rapid developments of the inverse problems in mathematics and physics. This paper does some research on the forward problem of inversion imaging of nugget and establishes the forward model of RSW on the basis of the forward theory and...
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