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《Low Temperature Architecture Technology》 2009-06
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APPLICATION OF ARC-LENGTH METHOD TO TRACING FOLDING PROCESS OF SELF-HOLD FOLDABLE STRUCTURES

ZHAO Hong-bin (China Academy of Building Research,Beijing 100013,China)  
As one kind of deployable structures,foldable structures are a new type of space structure used in civil engineering.The constitution and geometric design parameters are discussed and self-locking theory of foldable structures is investigated.Using the snap-through phenomenon in the process of deployment,foldable structures can be self-locked.On account of the geometrically nonlinear problems in the process of deployment of self-locking foldable structures,the Arc-length method and the choices of its parameters,load incremental modulus and Arc-length increment are developed.With the Arc-length method the load-displacement path in folding process of self-locking square prism units have been conducted.It can be accomplished successfully to transit form the pre-bucking state to the post-bucking path.
【CateGory Index】: TU356
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