Journal
NONLINEAR DYNAMICS
Volume 109, Issue 3, Pages 1325-1340Publisher
SPRINGER
DOI: 10.1007/s11071-022-07499-z
Keywords
Wearing clearance; Multi-link mechanism; Dynamics responses; Nonlinear characteristics; Experimental platform
Categories
Funding
- National Natural Science Foundation of China [51774193]
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Irregular wear is one of the main reasons leading to the failure of mechanical equipment and mechanical parts. This study proposes a modeling and calculation method for planar multi-link mechanism considering multiple wearing clearances, and verifies the correctness of the theoretical model through experimental results.
Irregular wear is one of the main reasons leading to the failure of mechanical equipment and mechanical parts. The coupling between irregular wear and system dynamic behavior has an important influence on the performance of the mechanism. A modeling and calculation method for planar multi-link mechanism considering multiple wearing clearances is proposed. Taking 2 DOFs nine bars mechanism as research object, iterative wear prediction process based on Archard model is applied to calculate wear characteristics, wear prediction process is combined with multi-body system dynamics to obtain dynamic model considering wearing clearance of revolute pair, and its dynamic response is analyzed. The nonlinear characteristics are analyzed qualitatively and quantitatively by phase diagram, Poincare map, and Largest Lyapunov exponent. At the same time, experimental platform of 2 DOFs nine bars mechanism is built to analyze influence of wearing clearance on response of mechanism. Correctness of theoretical model is verified by experimental results.
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