Study of the Dynamic Response of a Rigid Runway with Different Void States during Aircraft Taxiing

In this study, a set of numerical simulation analysis methods for studying the dynamic response runway under action aircraft taxiing load are presented. An aircraft-runway coupled vibration model was established, and pavement roughness taken as excitation source; then, obtained. A three-dimensional finite element vertical displacement (VDD) its variation law different void conditions were studied aircraft. addition, using wavelet packet transform, acceleration signals at positions slab sliding decomposed into three layers. The relationship among energy ratio (WPER), entropy (WPEE) each frequency band, results show that established could quickly accurately solve load. case slight void, VDDs in center main landing gears had negative exponential logarithmic relationships with reduction coefficient elastic modulus base layer, respectively. When there severe separated from layer. exponentially linearly related to slab’s area, extracted measuring points, characteristics compared analyzed. It found WPER WPEE area corner better reflect state bottom.