PALLET-Express: Computation of the mechanic performances
PALLET-Express allows the analysis of the mechanical performances of the considered pallet. The admissible loads are given under different types of loads and conditions of handling or stocking.
The evaluation methods of the mechanical performances (resistance, bending) intended to ensure the safety of goods and people rely upon the test of physical samples of pallets built to be subjected to series of tests conduced in accordance with the procedures like those defined in the ISO 8611.
||Another method consists in the use of samples drawn numerically with software like PALLET-Express.
As long as the acceptance of these computer-aided procedures of pallet's study won't be decided by the organization who defines the standards, tests on physical prototypes will remain the rule.
However, by using reliability methods and techniques of simulation like Monte-Carlo's methods, the tests conducted on numerical models of pallets in PALLET-Express can prove as effective as physical prototype testing. They present the advantage of being an aid-decision method at the lowest cost before launching obviously more expensive laboratory tests.
In this way, PALLET-Express
proposes the determinist or probabilistic analysis of the pallets for any loading, handling or stocking conditions.
|Load and support conditions
In order to design the real load conditions as well as the series of tests defined in the ISO 8611, PALLET-Express
takes into consideration the four following load conditions:
- Uniform load on all the surface
- Uniform load on a part of the surface
- Linear load parallel to the direction of the topdeck
- Linear load perpendicular to the direction of the topdeck
Uniform repartition of the load |
About the support conditions, PALLET-Express
takes into account the following configurations:
- Stockpiling on racks in both length or width directions
- Handling by the wings
- Handling by forklift or pallet jack
proposes the following results under each considered condition of computation:
- The limit load
- The nature of the first breaking elements
- The testing load
- The bending observed under the testing load
- The efforts in the joints groups