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| Probabilistic analyse of shaft based on APDL parametric modeling |
| Gong Enxiang1， Huang Mingke1， Wu Jianbo2， Ding Yana1， Pan Binghui1 |
| (1.Research Center of Fluid Machinery Engineering and Technology， Jiangsu University， Zhenjiang， Jiangsu 212013， China； 2.Hefei Huasheng Pump and Valve Co.Ltd.，Hefei， Anhui 230031， China) |
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Abstract Using probability design system(PDS) provided by ANSYS software, taking pump geometric dimensions， load， stress，elastic modulus and strength limit etc as random variables, and according to stressstrength interference theory, the limit state function was created. The 3D solid model was established by APDL parametric design. Considering the real load to the shaft， static stress calculation was conducted, and probability analysis file was created. The method of Monte Carlo simulation technique and Latin hypercube sampling method was used to calculate the shaft reliability. The result shows that the method can obtain higher precision of failure probability of the shaft and more convenient than the traditional design. A reliability assessment for HS1K alkali pump shaft was demonstrated as an example， and the probability distribution of the shaft stress was obtained. The reliability of the pump shaft is 99.75% in the confidence level of 95%. It shows that the ANSYS/PDS can provide a theoretical help for Manufacturers to improve product， and has some engineering application values.
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Received: 07 January 2010
Published: 30 November 2010
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