风力发电机组基础受力特性及基础环疲劳分析

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1、分类号（UDC风密级力学号11081508881发电机组基础受力特性及硕士学位论文基础环疲劳分析）风力发电机组基础受力特性及基础环疲劳分析李佳李佳伟伟学科名称：水工结构工程西安学科门类：工学理工指导教师：李守义教授大学丁满堂高工申请日期：2014年2月AbstractmoduleofANSYSforfoundationringfatiguelifeanalysisofthewindturbinefoundationandselectionappropriateS-Ncurve.Calculatethefatiguelifeoffoundation

2、ring,theresultsshowthatintheuseperiodofwindturbinefoundationthefoundationringwon'tappearfatiguedamage.（4）Analyzingthechangeofthefoundationringfatiguelifewithdifferentburieddepthandthickness.Withtheincreaseofburieddepth,fatiguelifefirstincreasesthendecreasesandwhenburieddeeply

3、0.7timesthefatiguelifeofminimumvaluebutcankeepsafeofwindturbinefoundationintheuseperiod.Thechangesofthicknessin30mmto90mmrangeismoreinfluenceforfatiguelife,withtheincreaseofthethicknessthefatiguelifeisincrease.Whenthethicknessis30mmcannotkeepthesafeofwindturbinefoundationinth

4、euseperiod.Theengineeringexample,cansatisfytheabovelaws.Keywords:Gravitytypeofspreadfoundation,foundationring,fatiguelifeIII目录目录1绪论............................................................11.1研究背景与意义......................................................11.2发展现状............

5、................................................21.2.1风机基础发展现状..............................................21.2.2金属疲劳的发展................................................21.3研究的意义及内容....................................................32风力发电机组基础数值模拟基本理论.........................

6、...........52.1有限元方法分析......................................................52.2非线性基本理论......................................................62.2.1非线性问题分类................................................62.2.2ANSYS对非线性问题的求解方法...................................72.3接触问题.........

7、...................................................93重力式扩展基础计算研究............................................113.1重力式扩展基础基本资料.............................................113.2重力式扩展基础计算模型.............................................123.3重力式扩展基础计算................................

8、.................153.3.1正常荷载工况下受力特性与变形计算............................