Knowledge of damage identification about tensegrities via flexibility disassembly

1st International Conference on Frontiers of Materials Synthesis and Processing

材料科学;化学

Jiang, Ge^1 ; Feng, Xiaodong^1 ; Du, Shigui^1

College of Civil Engineering, Shaoxing University, Shaoxing, Zhejiang, China^1

关键词: Connectivity matrix;    Damage Identification;    Magnitude information;    Stiffness parameters;    Structural damage identification;    Structural flexibilities;    Tensegrity structure;    Tension and compression;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/274/1/012053/pdf
DOI  :  10.1088/1757-899X/274/1/012053

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Tensegrity structures composing of continuous cables and discrete struts are under tension and compression, respectively. In order to determine the damage extents of tensegrity structures, a new method for tensegrity structural damage identification is presented based on flexibility disassembly. To decompose a tensegrity structural flexibility matrix into the matrix represention of the connectivity between degress-of-freedoms and the diagonal matrix comprising of magnitude informations. Step 1: Calculate perturbation flexibility; Step 2: Compute the flexibility connectivity matrix and perturbation flexibility parameters; Step 3: Calculate the perturbation stiffness parameters. The efficiency of the proposed method is demonstrated by a numeical example comprising of 12 cables and 4 struts with pretensioned. Accurate identification of local damage depends on the availability of good measured data, an accurate and reasonable algorithm.