Usually, there won’t be any problems with the process once the user begins to simulate a part to get the results. The question arises on the interaction of components where the user tries to work with assembly. The observations are most probably that they have either removed their global interaction or altered the gap range of bonding.
There are three types of Interaction in the Component Interaction command window. In this blog the bonded interaction with & without gap range is discussed in detail
- Bonded: This defines two faces touching each other or faces with a specific gap range between them (When specified for non-touching faces) to stay remained touching irrespective of loads applied on the faces during analysis. When two parts with two faces are bonded together they behaves as one part.
- Contact: This defines two or more faces to touch and develop interaction between them, as well as move away from each other. There will be a small gap range between two faces for their reaction when forces are applied.
- Allow Penetration: This interaction feature enables many components to flow into each other at the defined faces while the analysis is running. This interaction option is mostly utilized for frequency and buckling analysis.
The Gap range of bonding represents the value/percentage of gap between the parts in the assembly. This value makes the interaction of components possible with gaps while simulating an Assembly.
Component Interaction Types:-
Assembly Considered for Simulation with gap (Case 2):-
Boundary Conditions:-
All the four legs were fixed & 100 N of load/Force is acting on the table.
Interaction Conditions:-
The interaction condition of the two cases are important to replicate the behaviour of the assembly. In case 1 the assembly has no gap when the model is considered for simulation it automatically takes the component interaction as bonded as far as SOLIDWORKS Simulation is considered, but in the case 2 the scenario is different because of gap. Interaction viewer
Assembly with gap (No geometry based Interaction found)
Assembly with gap (With gap range as 6mm)
In case 2 the assembly has a maximum gap of 6mm in the model, so the gap range to be mentioned in the component interaction so that the interaction can be generated. After solving the assembly there behaviour of the results are discussed here.
In case 1 the behaviour is common but in case 2 there are two different behaviour in the results because of gap range.
When the gap range is mentioned as 0mm the results behaviour changes drastically, and if the value is mentioned as 6mm (large gap value) the result behaviour matches with the first assembly.
Results:
- Assembly without gap range 
- Assembly with gap & with gap
- Assembly with gap without gap rangeAuthor : Karthikeyan R is an Application Engineer with an under graduation degree in Mechanical Engineering (B.E), specialization in Product Design & Manufacturing (M.TECH). He serves as a Technical Support Engineer – CAE Applications, with 5 year of Academic experience & 2.5 years of experience over SIMULIA, SOLIDWORKS SIMULATION and also with the 3DEXPERIENCE Ecosystem. His expertise has enabled him to successfully assist over 50 customers in resolving technical challenges, improving their Product development, and achieving their goals.
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