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Microplane modeling of martensite reorientation in shape memory alloys
Two main parts of the inelastic strain in deformations of shape memory alloys are transformation- and reorientation- induced strains. In some constitutive models, a distinct term is assigned for reorientation of the product p hase according to variations of loading di-rection. In this work, a model is proposed in which there is not any separate expression for modeling the reorientation part. This model is based on Microplane theory and is inherently able to account for reorientation strains in multiaxial loadings. Stress-strain diagrams for uniaxial tension at different temperatures are simulated in order to compare the present ap-proach and another one in which the reorientation strain is separately stated. A very good agreement is seen indicating the capability of Microplane theory to predict the main charac-teristics of the behaviors of shape memory alloys.
R. Mehrabi, M. Kadkhodaie, S. ARBAB CHIRANI, “Microplane modeling of martensite reorientation in shape memory alloys”, ECCOMAS 2012, European Congress on Computational Methods in Applied Sciences and Engineering, e-Book Full Papers, vol.null, pp.8986-8994, Vienna, Austria, 2012.
نویسنده :  R. Mehrabi, M. Kadkhodaie, S. ARBAB CHIRANI    |    فایل PDF :   Microplane modeling of martensite reorientation in shape memory alloys    |    1393/3/12

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