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Báo cáo nghiên cứu khoa học: "Composite cylinder under unsteady, axisymmetric, plane temperature field"

Với những lợi thế như độ bền cao, độ cứng cao, khả năng chịu hóa chất cao, trọng lượng nhẹ . ống composite được áp dụng rộng rãi trong xây dựng đô thị và công nghiệp dầu khí. Trong báo cáo này, các tác giả sử dụng phương pháp chuyển để nghiên cứu hành vi cơ khí (stress, căng thẳng .) của một hình trụ rỗng vô hạn làm bằng vật liệu composite dưới không ổn định, lĩnh vực axisymmetric nhiệt độ máy bay | VNU Journal of Science Mathematics - Physics 26 2010 83-92 Composite cylinder under unsteady axisymmetric plane temperature field Nguyen Dinh Duc1 Nguyen Thi Thuy2 1 University of Engineering and Technology Vietnam National University Hanoi University of Science Vietnam National University Hanoi Received 2 January 2010 Abstract. With advantages such as high strength high stiffness high chemical resistance light weight.composite tubes are widely applied in urban construction and petroleum industry. In this report the authors used the displacement method to study the mechanical behavior stress strain. of an infinite hollow cylinder made of composite material under unsteady axisymmetric plane temperature field. In the numerical calculations we mainly studied the influence of time and volume ratio of the particle on the displacement and thermoelastic stress of a cylinder made of Titanium PVC composite. 1. Introduction Nowadays composite materials are increasingly promoting their preeminences such as high shock capacity high thermal-machanical load capacity. when applied in real structures. The study of thermal-mechanical behavior of composite cylinder has attracted the attention of many authors and series of articles have been published on this field. The transient thermal stress problems of multilayered cylinder as well as hollor composite cylinder are studied in 1-4 by different methods. Iyengar et al. 5 investigated thermal stresses in a finite hollow cylinder due to an axisymmetric temperature field at the end surface. Soldatos et al. 6 presented the three dimensional static dynamic thermoelastic and buckling analysis of homogeneous and lamilated composite cylinders. Bhattacharyya et al. 7 obtained the exact solution of elastoplastic response of an infinitely long composite cylinder during cyclic radial loading. Ahmed et al. 8 studied thermal stresses problem in non-homogeneous transversely isotropic infinite circular cylinder subjected to certain boundary .