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Numerical and Experimental Investigation of Additive Manufactured Cellular Lattice Structures
Published in Amar Patnaik, Vikas Kukshal, Pankaj Agarwal, Ankush Sharma, Mahavir Choudhary, Soft Computing in Materials Development and its Sustainability in the Manufacturing Sector, 2023
V. Phanindra Bogu, Locherla Daloji, Bangaru Babu Popuri
The lattice structures are modelled in Rhinoceros software and exported to Ansys 18.0 for FEA. The elastoplastic condition is considered for FEA. The elastic modulus helps to understand the elastic behaviour of the material, whereas the tangent modulus represents the plastic behaviour of the material. The graph points were approximated and plotted in Excelin order to calculate the elastic modulus.
An Introduction to Material Selection
Published in Keith L. Richards, The Engineering Design Primer, 2020
Tangent modulus is defined as the slope of a line tangent to the stress-strain curve at a point of interest. Tangent modulus can have different values depending on the point at which it is determined. For example, tangent modulus is equal to the Young's modulus when the point of tangency falls within the linear range of the stress-strain curve.
Force-System Resultants and Equilibrium
Published in Richard C. Dorf, The Engineering Handbook, 2018
If material nonlinearity is to be accounted for, the analysis can proceed by replacing the elastic modulus E by the tangent modulus Et. The tangent modulus is defined as the slope of the nonlinear stress-strain curve of the material. For aluminum columns, the Ramsberg-Osgood [1943] equation for stress-strain behavior can be used to express Et as follows Et=E1+0.002nEσ0.2σσ0.2n-1
Back analysis of tensile test drilled shafts and barrettes
Published in Journal of the Chinese Institute of Engineers, 2020
San-Shyan Lin, Chia-Hong Lai, Jen-Cheng Liao, Dominic E. L. Ong
where is the tangent modulus, A is the gradient of the tangent modulus, B is the y-intercept of the tangent modulus line, d is the difference in the stress from one load increment to the next, is the difference in the strain from one load increment to the next. The strain data that is measured at each level at which a strain gage is installed is used to calculate the tangent modulus. The secant modulus is calculated using Equation (5), and can be replaced by the tangent modulus using Equation (7) and then substituted into Equation (6) to calculate the pile axial load.