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Abstract：
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The hydraulic-bulging automobile axle housings were simulated and the proving tests were made.During the first bulging,it was analyzed that the bulging pressure was constant and linear changed according to axial compression,as well as the limit unsteadiness case and fracture case.The low bulging pressure was the major reason of wrinkle,which was not of advantage to the second bulging.The high bulging pressure brought about fracture.During the second bulging,it was concluded that the annealing process was the important conditions of successful bulging.The rational relationship between axial compression and bulging pressure was found.
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Funds：
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河北省自然科学基金资助项目(20060912)
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AuthorIntro：
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Reference：
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