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《Modern Manufacturing Engineering》 2006-11
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Simulation and experiment studies on load-deformation of disc spring in pneumatic DTH hammer

Qu Yegao,Bu Changgen,Lü Changchun(School of Engineering and Technology,China University of Geosciences,Beijing 100083,CHN)  
Disc spring load-deformation characteristics can directly affect pneumatic DTH hammer system vibrations.Formula Muhr and finite element software ANSYS were employed to study the load-deformation characteristics of disc spring with rectangle section and parallelogram section separately.To verify the feasibility of the simulation,experiments on the load-deformation of disc spring with parallelogram section were investigated.Then simulation results are compared with experimental data.The comparison shows that formula Muhr can be suitably applied for disc spring with rectangle section but will bring great error for those with parallelogram sections.When deformation is large enough,the place of applied force can be changed,and the finite element analysis results with contact considered can agree well with the experiment results.Thus finite element method can provide more accurate and suitable characteristic parameters of disc spring for the vibration control design of DTH hammer.
【Fund】: 国家自然科学基金项目(50475056)
【CateGory Index】: TP391.9
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Chinese Journal Full-text Database 1 Hits
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