A method for evaluating equivalent stress of uniform pressure center of wall panel under fixed condition

The invention belongs to the technical field of aeronautical structure design, and relates to a method for evaluating equivalent stress of uniform pressure center of wall panel under fixed condition,which obtains an analytic solution of the isotropic force of the wallboard center point under the clamped condition through mathematical derivation and avoids the influence of subjective factors on acalculation result. And the equivalent stress of the wall plate is the combined action of the bending stress and the film stress. Wherein the bending stress has a one-time function relation about thethickness and the center deflection of the wall plate in the thin film stress, the thin film stress can be obtained through the material constant and the support coefficient of the wall plate and thecenter deflection of the wall plate, then the bending stress is obtained, and finally the equivalent stress at the center of the wall plate is obtained. According to the method, the composite stress of the center point of the wa