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《Physical Testing and Chemical Analysis Parta Physical Testing》 2003-01
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MULTIVARIATED REGRESSION ANALYSIS BETWEEN CUPPING TEST VALUE (IE) AND MECHANICAL PROPERTIES OF METAL SHEET

WENG Wen-da (Shanghai Iron and Steel Research Institute, Shanghai 200940, China)  
Using statistical backward elimination method, the mathematic model was established for the relativity between cupping test value (IE) and mechanical properties of 9 kinds of steel sheet. It was demonstrated that σ_s, σ_s/σ_b, n and HV had obvious effect on IE while ΔR had no effect on IE (It afforded a proof that ΔR is often omitted in plasticity theory analysis), and IE could be increased by decreasing σ_s, σ_s/σ_b and HV or by increasing n. It was proved by the experiments that the established mathematic model for relativity is of practical usefulness.
【CateGory Index】: TB114
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