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Abstract. In this work our objective is to understand the failure behaviour of unreinforced masonry under in-plane cyclic loading. For this purpose we proposed a plasticity based interface model consists of a single yield surface criteria which is a direct extension of Mohr–Coulomb criteria with a tension cut and compression cap and a back stres...

16 trang | Chia sẻ: thanhle95 | Ngày: 17/07/2021 | Lượt xem: 648 | Lượt tải: 0

Abstract. THz metamaterial absorbers are often studied by computational techniques, where the influence of actual material parameters and fabricating limitation has not been completely understood. Here we present an experimental investigation on a far-infrared metamaterial absorber composed of a gold disk-shaped resonator, a silicon oxide spacer...

7 trang | Chia sẻ: thanhle95 | Ngày: 17/07/2021 | Lượt xem: 360 | Lượt tải: 0

Abstract. In this study, a simple size-dependent isogeometric approach for bending analysis of functionally graded (FG) microplates using the modified strain gradient theory (MSGT), simple first-order shear deformation theory (sFSDT) and isogeometric analysis is presented for the first time. The present approach reduces one variable when comparin...

13 trang | Chia sẻ: thanhle95 | Ngày: 17/07/2021 | Lượt xem: 408 | Lượt tải: 0

Abstract. The paper presents a new approach to the conventional averaging in which the role of boundary values is considered in a more detailed way. It results in a new weighted local averaging operator (WLAO) taking into account the particular role of boundary values. A remarkable feature of WLAO is that this operator contains a parameter of bou...

14 trang | Chia sẻ: thanhle95 | Ngày: 17/07/2021 | Lượt xem: 418 | Lượt tải: 0

Abstract. When the method of finite spheres is used for the solution of time-harmonic acoustic wave propagation problems in nonhomogeneous media, a mixed (or saddle-point) formulation is obtained in which the unknowns are the pressure fields and the Lagrange multiplier fields defined at the interfaces between the regions with distinct material pr...

30 trang | Chia sẻ: thanhle95 | Ngày: 17/07/2021 | Lượt xem: 389 | Lượt tải: 0

Abstract. This paper presents a method to build up statically admissible slip-line field and, as a result, the field of statically admissible stresses of plane-strain compression of a three-layer symmetric strip consisting of two different rigid perfectly plastic materials between rough, parallel, rigid plates The case is considered when the she...

15 trang | Chia sẻ: thanhle95 | Ngày: 17/07/2021 | Lượt xem: 432 | Lượt tải: 0

Abstract This study proposes a numerical model based on the depth-integrated non-hydrostatic shallow water equations with an improvement of wave breaking dissipation. Firstly, studies of parameter sensitivity were carried out using the proposed numerical model for simulation of wave breaking to understand the effects of the parameters of the br...

18 trang | Chia sẻ: thanhle95 | Ngày: 17/07/2021 | Lượt xem: 477 | Lượt tải: 0

Abstract. Based on the circle assemblage model, the effective properties of the inclusion with imperfect interface are derived. The equivalent inclusion is incorporated in the Fourier Transform algorithm to determine the effective conductivity of the composite with lowly conducting or highly conducting interface. The size effect is considered for...

9 trang | Chia sẻ: thanhle95 | Ngày: 17/07/2021 | Lượt xem: 370 | Lượt tải: 0

Abstract. Nanocomposites of graphene oxide (GO) and tungsten oxide (WO3) nanobricks were synthesized by co-dispersing graphene oxide and tungsten oxide nanobricks in bi-distilled water with different weight ratios (0.1, 0.3 and 0.5 wt.% of graphene oxide). The ammonia gas sensing properties of nanocomposites were studied at low temperatures (50,...

14 trang | Chia sẻ: thanhle95 | Ngày: 17/07/2021 | Lượt xem: 396 | Lượt tải: 0

Abstract. This paper presents free vibration analysis of functionally graded (FG) porous nanoplates based on isogeometric approach. Based on a modified power-law function, material properties are given. The nonlocal elasticity is used to capture size effects. According to a combination of the Hamilton’s principle and the higher order shear defor...

11 trang | Chia sẻ: thanhle95 | Ngày: 17/07/2021 | Lượt xem: 399 | Lượt tải: 0