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.
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 ; 26 , 12 ; 402-406
1954-12-01
5 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Online Contents | 2005
Engineering Index Backfile | 1953
Transient thermal stresses in wings
Engineering Index Backfile | 1953
|Transient Thermal Stresses in Wings
Emerald Group Publishing | 1953
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