کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
278492 1430279 2012 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Singularity and kinematic bifurcation analysis of pin-bar mechanisms using analogous stiffness method
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Singularity and kinematic bifurcation analysis of pin-bar mechanisms using analogous stiffness method
چکیده انگلیسی

Based on the analogy between bifurcation of equilibrium paths in structures and kinematic bifurcation of mechanisms, this paper proposes an analogous stiffness method to detect the singularity and kinematic bifurcation of mechanisms. The analogous stiffness in mechanisms is first defined as the derivative of the state variable with respect to the controlling variable. By investigating the value of analogous stiffness, the singularity can be classified into output singularity, input singularity and architectural singularity. And the kinematic characteristics of free joints at corresponding singularity configurations are expounded. The singular and kinematic bifurcation points of mechanisms can then be determined by solving analogous stiffness equations and compatibility equations simultaneously. Following that, the analytical criterion for finite motion of corresponding free joints at singularity configurations is derived from the second-order analysis of compatibility equations. The efficiency of the proposed method is finally illustrated by three typical examples.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volume 49, Issue 10, 15 May 2012, Pages 1212–1226
نویسندگان
, , ,