Wings Under Repeated Thermal Stress: Permanent Elasticity, Shakedown, Alternate Plasticity and Incremental Collapse in Wings Subjected to a Number of Thermal Cycles
Aircraft Engineering and Aerospace Technology
ISSN: 0002-2667
Article publication date: 1 December 1954
Abstract
When an aircraft changes its speed or altitude, large thermal strains may be set up in the wing structure; sometimes these are of sufficient magnitude for the accompanying stresses to exceed the clastic limit of the material. During its life the aircraft may suffer a large number of cycles of thermal stress. Under repeated thermal loading it is found that four types of stress‐strain system may be set up: permanent elasticity and shakedown to an clastic state, which are safe, and alternate plasticity and incremental collapse, which are dangerous. The present paper investigates these stress‐strain systems and determines the conditions for their occurrence.
Citation
Parkes, E.W. (1954), "Wings Under Repeated Thermal Stress: Permanent Elasticity, Shakedown, Alternate Plasticity and Incremental Collapse in Wings Subjected to a Number of Thermal Cycles", Aircraft Engineering and Aerospace Technology, Vol. 26 No. 12, pp. 402-406. https://doi.org/10.1108/eb032500
Publisher
:MCB UP Ltd
Copyright © 1954, MCB UP Limited