Modified elastic properties

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 comparing with the original first-order shear deformation theory (FSDT) within five variables and only considers three material length scale parameters (MLSPs) to capture size effects.

13p trinhthamhodang9 10-12-2020 15 0   Download

In this paper, we focus specially on the effective elastic moduli of the heterogeneous composites with arbitrary inclusion shapes. The main idea of this paper is to replace those inhomogeneities by simple equivalent circular (spherical) isotropic inclusions with modified elastic moduli. Available simple approximations for the equivalent circular (spherical) inclusion media then can be used to estimate the effective properties of the original medium.

13p cothumenhmong8 04-11-2020 13 2   Download

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 deformation theory, the governing equations of the porous nanoplates are derived.

11p angicungduoc5 13-06-2020 16 0   Download

The effectiveness of powdered emulsions (powdered cement modifiers) and aqueous polymer dispersions (aqueous cement modifiers) on improvements in strength and elastic properties of mortars is investigated in this paper. Polymer-modified mortars using various powdered and aqueous cement modifiers were prepared with variation in polymer-cement ratio, and tested for flexural strength, compressive strength, tensile strength, deflection, extreme tensile fiber strain and tensile strain.

15p christian2605 11-10-2019 39 0   Download

In this study, two types of acrylic latexes, PA (polyacrylate) and PU/PA (polyurethane modified PA), are investigated in their influences on mechanical properties of mortar under different interaction mechanisms. In light of a previous study, the polymer–cement hydrates interaction mechanisms in PA and PU/PA modified mortars are illustrated respectively, and the microstructures are simulated using a computer model.

9p christian2605 11-10-2019 29 1   Download

A novel approach to predict the effective elastic moduli of matrix composites made from non-circular inclusions embedded in a continuous matrix is proposed. In this approach, those inhomogeneities are substituted by simple equivalent circularinclusions with modified elastic properties obtained from comparing the dilute solution results.

10p thienthanquydu 23-10-2018 27 0   Download

The skin plays an important role in maintaining the integrity of the living organism while allowing the interaction of the organism with its environment. To fulfill these functions, mechanical stability is as important as flexibility. The mechanical properties of skin are very diverse depending on the anatomical location, and they evolve throughout life from the fetus to old age. Both genetic and acquired skin diseases modify skin biomechanics, as do intrinsic and photoaging.

321p hyperion75 18-01-2013 54 6   Download

Giáo án môn học: Tin ứng dụng trong Thiết kế cầu Version βeta 18. Kích vào Define menu Materials để hiển thị hộp thoại Define Materials. 19. Click vào CONC trong vùng Materials để chọn, và sau đó kích vào Modify/Show Material để hiển thị hộp thoại Material Property Data. Trong hộp thoại này: Gõ 5000 vào ô Modulus of Elasticity. Gõ 0.2 vào ô Poisson’s Ratio. Kích vào OK trong Material Property Data và Define Materialss để thoát. 20.Nhấn drop-down box để chuyển hệ đơn vị sang dạng . 21. Kích vào Define menu Frame Sections để hiển thị hộp thoại Frame Properties....

20p ctnhukieu6 30-04-2011 143 18   Download

Giáo án môn học: Tin ứng dụng trong Thiết kế cầu Version βeta 8. Chọn CONC trong Materials, sau đó chọn Modify/Show Material để xuất hiện Material Property Data. Sau đó: Nhập 3600 vào ô Modulus of Elasticity. Nhập 0.2 vào ô Poisson’s Ratio. Nhập 4 vào ô Specified Conc Comp Strength, f′c. Nhập 60 vào ô Bending Reinf. Yield Stress, fy. Nhập 60 vào ô Shear Reinf. Yield Stress, fys. Chấp nhận các giá trị mặc định khác Nhấn OK trong ô Material Property Data và Define Materials để thoát ra ngoài. 9. Chọn Define menu → Frame Sections, hộp thoại...

20p ctnhukieu6 30-04-2011 120 18   Download