Abstract. By studying gear meshing force variation law, the function damage effect of involute gear transmission system under the situation of the structural damage can be obtained. It can provide the basis for the quantitative evaluation of function damage effect for gear transmission system. A computation method based on dynamic simulation is proposed. Through establishing the 3D model of broken gear and using the dynamic simulation software ADAMS to establish the dynamic model of involute gear transmission system based on the Hertz contact theory. Then the simulation analysis is carried for different broken length of the tooth and different load. The simulation results show that broken tooth and load both will influence the meshing force, and the influence law is different when the broken length or the load is different.
The structural and mechanical behaviours of most origami-inspired or folded structures is strongly dependent upon the mechanical behaviours of their constituent crease lines. Characterisation of the rotational behaviours of the steel hinges is therefore a critical step in the analysis of origami-inspired steel structures. This paper will present a numerical modelling approach for simulating the rotational response of digitally-fabricated steel hinges, over a large rotation range from 0° up to 170°. Numerical response predictions are verified against published experimental results, over a range of sheet thicknesses and fold line parameters. Models are then used to give insight into observed thick-panel clash behaviours and fold-line localised strap mechanics. The developed numerical modelling procedure provides a convenient analysis method for rapid prediction of steel hinge behaviour.
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