基于CAE技术的铝型材挤压模具疲劳寿命仿真分析(3)

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高教硕十学位论文

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Ｗｉｔｈｔｈｅｒｉｇｉｄｄｅｖｅｌｏｐｍｅｎｔｏｆｅｃｏｎｏｍｉｃｓ，ｔｈｅｅｘｔｒｕｓｉｏｎｐｒｏｆｉｌｅｄａｌｕｍｉｎｕｍ

ｔｈｅｍｏｓｔｐｒｏｄｕｃｔｉｓｗｉｄｅｌｙａｐｐｌｉｅｄｉｎａｒｃｈｉｔｅｃｔｕｒｅａｎｄｉｎｄｕｓｔｒｙ．Ｔｈｅｅｘｔｒｕｓｉｏｎｄｉｅｉｓ

ｉｍｐｏｒｔａｎｔｔｏｏｌｉｎｅｘｔｒｕｓｉｏｎｐｒｏｆｉｌｅｄａｌｕｍｉｎｕｍｐｒｏｄｕｃｔｉｏｎ，ａｎｄｉｓａｌｓｏｃｏｎｓｕｍｅｄｖａｓｔｌｙ．Ｔｈｅｃｏｓｔｏｆｅｘｔｒｕｓｉｏｎｄｉｅｉｓａｂｏｕｔ３０％－４０％ｏｆｔｈｅｔｏｔａｌｐｒｏｄｕｃｔｉｏｎｃｏｓｔ．Ｉｔｉｓｐｒｏｖｅｄｂｙｒｅｓｅａｒｃｈａｎｄｐｒａｃｔｉｃｅｔｈａｔｆａｔｉｇｕｅｉｓｏｎｅｏｆｍａｊｏｒｃａｕｓｅｏｆｅｘｔｒｕｓｉｏｎｄｉｅｆａｉｌｕｒｅ．Ｓｏｒｅｓｅａｒｃｈｉｎｆａｔｉｇｕｅｉｓｓｉｇｎｉｆｉｃａｎｔｔｏｅｘｔｒｕｓｉｏｎｄｉｅｄｅｓｉｇｎ．Ｂｙｕｓｉｎｇｆｉｎｉｔｅｅｌｅｍｅｎｔｍｅｔｈｏｄａｎｄｃｏｍｐｕｔｅｒａｉｄｅｄａｎａｌｙｓｉｓ，ｆａｔｉｇｕｅｄｅｓｔｒｏｙｒｅｓｅａｒｃｈｂｅｃｏｍｅｓｄｅｅｐｅｒａｎｄｗｉｄｅｒ．

Ｔｈｉｓｐａｐｅｒｆｉｒｓｔｌｙｄｉｓｃｕｓｓｅｄｃｕｒｒｅｎｔｒｅｓｅａｒｃｈｉｎｆａｔｉｇｕｅａｎａｌｙｓｉｓａｎｄｅｘｔｒｕｓｉｏｎｄｉｅｄｅｓｉｇｎ，ｗｏｒｋｅｄｏｕｔｔｈｅｐｒｉｍａｒｙｄｉｍｅｎｓｉｏｎｏｆｔｈｅｅｘｔｒｕｓｉｏｎｄｉｅａｃｃｏｒｄｉｎｇｔｏｄｅｓｉｇｎ

ｕｎｄｅｒＵＧｔｈｅｏｒｙａｎｄｅｘｐｅｒｉｅｎｃｅａｎｄｓｅｔｕｐｔｈｒｅｅｄｉｍｅｎｓｉｏｎｍｏｄｅｌｏｆｅｘｔｒｕｓｉｏｎｄｉｅ

ｔｏｏｌｓ．Ｔｈｅｎｂｙｃｏｍｂｉｎｉｎｇｔｈｅｍｅｔｈｏｄｓｏｆｆｉｎｉｔｅｅｌｅｍｅｎｔａｎｄｆａｔｉｇｕｅａｎａｌｙｓｉｓ，ｓｔｒｅｓｓｄｉｓｔｒｉｂｕｔｉｎｇｓｔａｔｕｓｏｆｅｘｔｒｕｓｉｏｎｄｉｅａｎｄ

ｔｏｓｔａｔｉｃｉｎｔｅｎｓｉｔｙｗａｓａｃｑｕｉｒｅｄｕｎｄｅｒＭＳＣ．Ｐａｔｒａｎ／Ｎａｓｔｒａｎｓｏｆｔｗａｒｅ．Ａｃｃｏｒｄｉｎｇｅｘｔｒｕｓｉｏｎｄｉｅｗｏｒｋ，ｆｕｌｌ

ｃｕｒｖｅｌｉｆｅｆａｔｉｇｕｅａｎａｌｙｓｉｓｍｅｔｈｏｄｗａｓｃｈｏｓｅｎ．ＥｘｔｒｕｓｉｏｎｌｏａｄｗａｓｃｒｅａｔｅｄｕｎｄｅｒＭＳＣ．Ｆａｔｉｇｕｅ

ＣＵｒＶｅａｌｏｎｇｗｉｔｈｖａｒｉｅｔｙｏｆｅｘｔｒｕｓｉｏｎｌｏａｄｉｎｅｘｔｒｕｓｉｏｎｐｒｏｃｅｓｓ．Ｓ－Ｎｏｆ４Ｃｒ５ＭｏＳｉＶ１

ｗａｓｃｒｅａｔｅｄａｃｃｏｒｄｉｎｇｔｏｒｅｌａｔｅｄｍａｔｅｒｉａｌｐａｒａｍｅｔｅｒｓａｎｄｐｒｏｖｉｄｅｄｆｏｒｄｉｅｆａｔｉｇｕｅｌｉｆｅａｎａｌｙｓｉｓ．Ｆｉｎａｌｌｙｂａｓｅｄｏｎｒｅｓｕｌｔｓｏｆｓｔａｔｉｃｓｔｒｅｓｓａｎａｌｙｓｉｓ，ｅｘｔｒｕｓｉｏｎｄｉｅｆａｔｉｇｕｅｌｉｆｅｗａｓｅｓｔｉｍａｔｅｄｂｅｆｏｒｅｈａｎｄｂｙｕｓｉｎｇＭＳＣ．Ｆａｔｉｇｕｅ．

Ｉｎｒｅｓｕｌｔｓｏｆｅｘｔｒｕｓｉｏｎｄｉｅｆａｔｉｇｕｅｌｉｆｅａｎａｌｙｓｉｓ，ｉｔｓｈｏｗｅｄｔｈａｔｆａｔｉｇｕｅｄｅｓｔｒｏｙｅｆｆｅｃｔｓｃａｕｓｅｄｂｙｅｖｅｒｙｖｅｃｔｏｒｏｆｅｘｔｒｕｓｉｏｎｓｔｒｅｓｓｉｎｄｉｆｆｅｒｅｎｔｓｔｒｕｃｔｕｒｅ

ａｒｅｐａｒｔｉｓｄｉｆｆｅｒｅｎｔａｎｄｔｈｅｗｅａｋｎｅｓｓｐａｒｔｉｓｌｏｃａｔｅｄｉｎｗｏｒｋｓｔｒｕｃｔｕｒｅ．Ｔｈｅｒｅｓｕｌｔｓ

ｉｍｐｒｏｖｅｔｈｅｏｐｔｉｍｉｚａｔｉｏｎｏｆｅｘｔｒｕｓｉｏｎｄｉｅｄｅｓｉｇｎｉｎｃｅｒｔａｉｎｓｅｎｓｅ．ｇｕｉｄｅｄｔｏ

ＫｅｙＷｏｒｄｓ：ＥｘｔｒｕｓｉｏｎＤｉｅ；ＦｉｎｉｔｅＥｌｅｍｅｎｔ；Ｆａｔｉｇｕｅｌｉｆｅ；ＳｉｍｕｌａｔｉｏｎＡｎａｌｙｓｉｓＩＩＩ