Research on Key Technology of Packaging Container Transportation Simulation (4)

3.3 Assembly of Packaging Containers and Cars

The assembled packaging container is placed on an already-built automobile model, and it is fixed on the automobile plate by three straps. The strap is simulated with the seat belt unit *ELEMENT_SEATBELT and a preload is applied.

3.4 Pavement Model

The road surface is based on a cobblestone pavement that complies with the US MGA standard, and pits as shown in Figure 5 (1) are added to the road surface according to the requirements of the road conditions.

4. Calculation and result analysis

The above model was calculated using dynamic explicit finite element software LS-DYNA. Make the truck run enough distance on the road surface. The simulation time in this example is 4 seconds.

4.2 Force Analysis of Packaging Containers and Products

Figure 6 is the acceleration curve of the centroid of the two products. Node 20268 is the centroid of the upper product and node 21353 is the centroid of the lower node. At the beginning of the operation, springs and other elastic parts are in the initial state. Under the action of gravity, the elastic parts are compressed and gradually reach an equilibrium state, and the acceleration is zero. From the curve, it can be seen that after about 0.3 seconds, the packaging container and the car have reached a stable operation state. Through simulation, you can know the stress state of each component in the product and packaging container.

(to be continued)