A Theoretical Study of Landing Mat Behavior
Abstract
Mechanistic models are developed to help predict the behavior of landing mat systems. The first model, which is based upon elastic theory, is capable of duplicating the action of such systems under static loads. The associated assumptions are: (1) that an infinite beam is the structural equivalent of the mat; (2) that the subgrade is homogeneous; (3) that horizontal displacements within the subgrade are negligible; and (4) that the mat always remains in contact with the subgrade. The model parameters are established from simulations of full-scale experimental tests. These parameters are also correlated with prototype test variables. Results from prototype tests indicate that the model parameter k, the subgrade modulus, decreases as trafficking of the section progresses. A second mechanistic model is developed to simulate actual loading sequences and to provide a means of estimating the residual deformations of the mat surface. The applicability of this model is demonstrated for both single-wheel and dual-wheel tests. Complete evaluation of the potentialities of this model is not possible from the available data.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1969
- Accession Number
- ADA040185
Entities
People
- John C. Rosner
- Milton E. Harr
Organizations
- Purdue Research Foundation