Mechanical properties number themselves among the most important properties of any polymeric material used in engineering applications. The Molecular Mechanics approach has been used to calculate the mechanical moduli of various polymers, but this approach has the limitation of requiring experimental ...
Here, harnessing the mesh-to-graph mapping, we propose a graph-based ML general method to predict deformed shapes, stress and strain fields in material and structural systems. To demonstrate the flexibility and generality of the proposed approach, we focus on three different material systems undergo...
A problem of determination of the stress-strain state, stability and optimization of the honeycomb structure of a polymeric tube wall under the action of a static force load is considered. As is customary in engineering practice, the ring rigidity of the tube is taken as its main design quanti...
Stress–strain measurements provide a means of obtaining many of these mechanical properties for the polymeric materials. The most generally derived information from stress–strain measurements include the modulus, the brittleness, and the ultimate and yield strengths of the polymeric material. The test...
To perform this test, a fixed tensile or compressive strain is applied to a sample, and the stress, which decays over time, is monitored. The decrease in stress at a constant strain corresponds to a decrease in the apparent modulus of the polymer. The modulus of a viscoelastic material ...
3.1. Results of Experimental Studies of Intensity (Construction of a Material Deformation Diagram “σ-ε”) In order to determine the relationship between stress and relative deformation occurring in FCPB, required for a comprehensive study of the cross-section of the deflection of a curved element...
Flexible cellular polymeric materials. Determination of stress-strain characteristics in compression-High-density materials 来自 掌桥科研 喜欢 0 阅读量: 2 标准号: BS EN ISO 3386-2:1998+A1:2010 摘要: 交叉引用:ISO 1923ISO 2439ISO 7500-1EN ISO 1923包含以下内容:修订,2010年6月.修订并替换BS EN ...
(1972). Parameters in (MJ/m3)1/2. Solvents (•), cracking agents (□), low-strain crazing agents (∇) and high-strain crazing agents (Δ) for (A) PMMA, (B) for PVC and (C) for polysulphone. The plus signs in the centre of the closed areas depict the parameters for the ...
In the line graph’s primary stage, creep response at higher stress saw a lower strain value (0.002 mm/mm) at lower time 360 s than the figure for 32 MPa (0.0055 mm/mm and 1850 s) to complete strain hardening and to enter the transient stage. Open in figure viewer...
At least seven sample pieces were tested for each material and notching condition. 60 a 60.0 °C 55.6 51.3 46.9 45 42.5 38.1 33.8 30 29.4 25.0 15 0 0 3 6 9 12 15 Strain (%) Figure 3 Determination of the maximum change in temperature (MCT) at full ligament yielding (indicated by ...