The aim of the project was to substitute a real-life test of a vehicle lift with a numerical analysis.
This tests role is to verify lifts resistance to impact. Situation when tailor-lift hits an obstacle (dynamic situation) is simplified to a special static loadcase according to codes and standards specific to this industry. According to those codes maximum stresses and total deformations cannot exceed certain values under specified compressive conditions. Those conditions for a real-life experiment are:
- tailor lift is fixed in a way that represents real mounting on a truck,
- tailor lift is in closed state,
- loading force should act on the most vulnerable area (induce highest deformations and stresses),
- force is induced by a hydraulic actuator acting on a tailor lift,
- between lift and actuator there should be a wooden block to avoid inducing local stress concentrations by actuators steel parts.
Numerical analysis was used because it allows for quicker and cheaper verification of the product than real-life test. Performed analysis retained all the recommendations and requirements described above. Model was properly fixed, frictional contacts were introduced, proper material properties assigned and loading forces was applied directly to wooden box in front of the lift (it was not necessary to include actuator in analysis).
After solving the analysis and checking the results it was clear that product meets specified requirements and can be produced.