轨道车辆设备箱体不同结构薄板性能对比研究
|
摘要
针对机车车辆设备箱体底板常用平板结构时存在刚度强度不足、易变形等问题,对比研究了平板和5种不同结构波纹板的力学性能。首先,基于Karman多项式推导了6种板型的均布力近似特征关系式。其次,根据波纹板线性和非线性近似固有频率关系式计算出了6种板型的固有频率近似值。然后,通过仿真验证了均布力和固有频率关系式的正确性。最后,对6种不同结构的箱体底板分两种类型进行强度、模态和疲劳仿真分析,得到半圆形波纹板作为设备箱体底板具有较好的性能,在实际工程运用中可予以考虑。
The common flat board as the bottom board of equipment box of locomotive and vehicle is prone to some problems such as lack of strength,deformation and crack.A comparison research is made for the mechanical properties between a flat board and five different corrugated boards in this paper.At first,the Karman polynomial is used to derive the approximate characteristic relation of the stress of the six boards.In addition,Based on the relationship of the linear and nonlinear approximate natural frequency relation of the corrugated board,the paper calculates the approximate value of the natural frequency of the six kinds of boards.What's more,the approximate characteristic relation and approximate natural frequency relation are verified by simulation.At last,the simulation and analysis of the strength,modal and fatigue of six kind of different structure floors of the equipment box are divided into two types,the paper has obtained semicircular corrugated board as the equipment box floor has good performance which can be taken into account in the practical project.
The common flat board as the bottom board of equipment box of locomotive and vehicle is prone to some problems such as lack of strength,deformation and crack.A comparison research is made for the mechanical properties between a flat board and five different corrugated boards in this paper.At first,the Karman polynomial is used to derive the approximate characteristic relation of the stress of the six boards.In addition,Based on the relationship of the linear and nonlinear approximate natural frequency relation of the corrugated board,the paper calculates the approximate value of the natural frequency of the six kinds of boards.What's more,the approximate characteristic relation and approximate natural frequency relation are verified by simulation.At last,the simulation and analysis of the strength,modal and fatigue of six kind of different structure floors of the equipment box are divided into two types,the paper has obtained semicircular corrugated board as the equipment box floor has good performance which can be taken into account in the practical project.
引文
[1]Park J,Horvath L,White M.The Influence of Package Size and Flute Type of Corrugated Boxes on Load Bridging in Unit Loads[J].Packaging Technology&Science,2017,30(1-2):33-43.
[2]Baker M,Horvath L,White M.Effect of Pallet Deckboard Stiffness on Corrugated Box Compression Strength[J].Packaging Technology&Science,2016,29(4-5):263-274.
[3]陈欢欢,薛璞,谭韶毅,谢慈航.铝合金薄板结构多模态随机振动疲劳分析[J].哈尔滨商业大学学报(自然科学版),2014,30(5):593-598,603.
[4]张威.波纹板在拉伸载荷下的力学性能研究[D].扬州大学,2016.
[5]田宝升.波纹钢腹板曲线箱梁的扭转性能研究[D].东南大学,2016.
[6]牟浩蕾,邹田春,陈艳芬,冯振宇.复合材料波纹板准静态压溃仿真与试验及材料模型参数分析[J].机械科学与技术,2015,34(4):618-622.
[7]熊健,郑伟,冯丽娜,孟凡壹,陆宇阳.波纹板-金字塔多级点阵结构力学性能及失效机制研究[J].固体力学学报,2015,36(S1):124-131.
[8]吴斌,赵继辰,刘增华,何存富.正弦型波纹板导波传播的理论模型与数值计算[J].应用基础与工程科学学报,2015,23(6):1254-1265.
[9]郑宇宁,邱志平,苑凯华.复合材料波纹板在剪切载荷下的屈曲特性分析与可靠性优化[J].振动与冲击,2016,35(19):7-14,25.
[10]郝际平.波纹圆薄板的非线性振动[J].机械强度,1995(1):56-59,77.
[11]Анлреева,Л.Е.,РасчётгоФрированныхМембран,КакАнизотропныхПластинок,ИнженерныйСборник,ТомХХI(1955).
[12]刘人怀.波纹圆板的特征关系式[J].力学学报,1978(1):47-52.
[13]王新志,王林祥,胡小方.波纹圆薄板的非线性振动[J].甘肃工业大学学报,1986(4):32-42.
[14]T.Dirlik.Application of Computers in Fatigue Analysis[D].Coventry University of Warwick,1985.
[2]Baker M,Horvath L,White M.Effect of Pallet Deckboard Stiffness on Corrugated Box Compression Strength[J].Packaging Technology&Science,2016,29(4-5):263-274.
[3]陈欢欢,薛璞,谭韶毅,谢慈航.铝合金薄板结构多模态随机振动疲劳分析[J].哈尔滨商业大学学报(自然科学版),2014,30(5):593-598,603.
[4]张威.波纹板在拉伸载荷下的力学性能研究[D].扬州大学,2016.
[5]田宝升.波纹钢腹板曲线箱梁的扭转性能研究[D].东南大学,2016.
[6]牟浩蕾,邹田春,陈艳芬,冯振宇.复合材料波纹板准静态压溃仿真与试验及材料模型参数分析[J].机械科学与技术,2015,34(4):618-622.
[7]熊健,郑伟,冯丽娜,孟凡壹,陆宇阳.波纹板-金字塔多级点阵结构力学性能及失效机制研究[J].固体力学学报,2015,36(S1):124-131.
[8]吴斌,赵继辰,刘增华,何存富.正弦型波纹板导波传播的理论模型与数值计算[J].应用基础与工程科学学报,2015,23(6):1254-1265.
[9]郑宇宁,邱志平,苑凯华.复合材料波纹板在剪切载荷下的屈曲特性分析与可靠性优化[J].振动与冲击,2016,35(19):7-14,25.
[10]郝际平.波纹圆薄板的非线性振动[J].机械强度,1995(1):56-59,77.
[11]Анлреева,Л.Е.,РасчётгоФрированныхМембран,КакАнизотропныхПластинок,ИнженерныйСборник,ТомХХI(1955).
[12]刘人怀.波纹圆板的特征关系式[J].力学学报,1978(1):47-52.
[13]王新志,王林祥,胡小方.波纹圆薄板的非线性振动[J].甘肃工业大学学报,1986(4):32-42.
[14]T.Dirlik.Application of Computers in Fatigue Analysis[D].Coventry University of Warwick,1985.