کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
803931 904806 2013 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Incorporation of flexural hinge fatigue-life cycle criteria into the topological design of compliant small-scale devices
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Incorporation of flexural hinge fatigue-life cycle criteria into the topological design of compliant small-scale devices
چکیده انگلیسی

The design synthesis of compliant mechanisms yields optimized topologies that combine several stiff parts with highly elastic flexural hinges. The hinges are often represented in a finite element analysis by a single node (one-node hinge), which leaves the actual physical meaning of the hinge (to be fabricated) ambiguous. In order to circumvent this problem, in this work, one-noded hinges have the fatigue-life incorporated into them during the design synthesis by embedding analytical expressions accounting for stress concentration, surface finish, non-zero mean stresses and superposed multiple loading conditions into the formulation. Various flexural hinges with rectangular, circular and parabolic profile geometries are investigated. By incorporating the hinge geometry and fatigue behavior into the design process, unclear interpretation issues that would be encountered during any later manufacturing stage of a compliant mechanism design are removed. Examples are provided to illustrate the overall process.


► Life cycle analysis and optimal design of planar flexure hinges are presented.
► Rectangular, circular and parabolic profile geometries are investigated.
► Stress concentration, surface finish, non-zero mean stresses and superposed loading conditions are taken into account.
► Explicit, analytical expressions are derived, inversely solved and applied.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Precision Engineering - Volume 37, Issue 3, July 2013, Pages 531–541
نویسندگان
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