常州工学院学报
常州工學院學報
상주공학원학보
JOURNAL OF CHANGZHOU INSTITUTE OF TECHNOLOGY
2013年
1期
1-5
,共5页
径向阵列式柔性支承%扭转刚度%解析计算%有限元模拟
徑嚮陣列式柔性支承%扭轉剛度%解析計算%有限元模擬
경향진렬식유성지승%뉴전강도%해석계산%유한원모의
flexible pivot bearing with radial array rectangular section%torsion stiffness%analytical cal-culation%finite element simulation
径向阵列式柔性支承属于精密弹性元件，能在有限范围精确提供角位移。文章对其最重要的性能指标（扭转刚度）进行了研究，根据力平衡法推导出阵列数为 N（N≥2）的扭转刚度计算公式，分析了扭转刚度表达式的构成和物理意义，对比分析了所推导的计算公式和文献计算公式的计算精度和适用性，建立了有效的有限元计算模型，模拟计算结果证明了所推导公式的有效性。研究表明，文章所推导的扭转刚度计算公式对于所有具有矩形截面的径向阵列式柔性支承都适用，且与有限元计算结果的差值稳定在约7％。
徑嚮陣列式柔性支承屬于精密彈性元件，能在有限範圍精確提供角位移。文章對其最重要的性能指標（扭轉剛度）進行瞭研究，根據力平衡法推導齣陣列數為 N（N≥2）的扭轉剛度計算公式，分析瞭扭轉剛度錶達式的構成和物理意義，對比分析瞭所推導的計算公式和文獻計算公式的計算精度和適用性，建立瞭有效的有限元計算模型，模擬計算結果證明瞭所推導公式的有效性。研究錶明，文章所推導的扭轉剛度計算公式對于所有具有矩形截麵的徑嚮陣列式柔性支承都適用，且與有限元計算結果的差值穩定在約7％。
경향진렬식유성지승속우정밀탄성원건，능재유한범위정학제공각위이。문장대기최중요적성능지표（뉴전강도）진행료연구，근거력평형법추도출진렬수위 N（N≥2）적뉴전강도계산공식，분석료뉴전강도표체식적구성화물리의의，대비분석료소추도적계산공식화문헌계산공식적계산정도화괄용성，건립료유효적유한원계산모형，모의계산결과증명료소추도공식적유효성。연구표명，문장소추도적뉴전강도계산공식대우소유구유구형절면적경향진렬식유성지승도괄용，차여유한원계산결과적차치은정재약7％。
Flexible pivot bearing,a kind of precision elastic components,can provide necessary angular displacement within limited range.The torsion stiffness of the bearing,as the most important performance specification,is studied in the paper.The analytical expression(for array number N and N≥2)of the torsion stiffness of the flexible pivot bearing with rectangular section is deduced by using static equilibrium theory. The constituent parts and physical meaning of the expression are discussed.The accuracy and applicability of the deduced expression are investigated in comparison with other equations in references.A finite element model is built accurately.Simulation of the flexible bearing is carried out to compare the FEM solution with that obtained by the derived expression.The results show that the deduced equation is applicable to all N ra-dial array flexible pivot bearings with rectangular section,and the difference of the stiffness value is about 7% comparing with that calculated by simulation method.
