ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
A numerical study of the static behaviours of composite strip with bifurcated type shapememory alloy pins has been conducted. The case of bifurcated type shape memory alloy pinsinserted inside the composite strip around the hole to reinforce the laminate, which was subjected tothe axial stress was simulated. The models for stress analysis were established by using ANSYSfinite element programme. Two types of shape memory alloy pins were proposed to insert along thethrough thickness direction of the carbon fibre woven fabric composite strip to induce the clampingforce. The pre-tensioned load was applied to the shape memory alloy pins in order to reduceoccurrence of delamination in the laminate. Three-dimensional elements and contact elements wereused to simulate the contact between the composite laminate and shape memory alloy pin toinvestigate the stress distribution around the hole in the composite strip. The effect of pre-strain ofshape memory alloy on the stresses inside composite was studied. The results show that the stresscharacteristics of the button-shaped and bifurcated shape memory alloy pin models are similar;however, the stresses for the button-shaped pin model are lower. The tensile and compressivestresses, both in button-shaped and bifurcated pin models, are strongly dependent on the percentageof pre-strain of the shape memory alloy. It is therefore concluded that the shape memory alloy pinmethod was significantly reduced the stress concentration of the composite strip laminate
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.334-335.1153.pdf
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