For polymers whose σ(ε) diagram has the form of a monotonically increasing curve the creep rate is monotonically damped with time. If, however, the stress-strain diagram has a maximum, the creep curve becomes stepped: after first slowing, the creep sharply accelerates, and then slows down ...
Stress-strain and birefringence-strain experiments, on polybutadiene and poly(methyl-3,3,3, trifluoropropyl siloxane) elastomeric networks of various degre... J Sanjuan,MA Llorente - 《Journal of Polymer Science Part B Polymer Physics》 被引量: 11发表: 1988年 Effect of chain stiffness and ent...
The results showed that strain and stress at break, plotted against cycle rank, form master curves dependent on strain rate; the fracture characteristics decrease with decreasing strain rate. Despite the interplay of Brownian motion, elongation, and bond scission, the cycle rank dependence is ...
Stress relaxation was measured after application of a double-step shear strain on a concentrated solution of polystyrene in chlorinated biphenyl. The first shear strain s1 was applied to the sample in a cone-plate sample holder of a relaxometer at time t1, the second strain s2 was added at ...
Stress‐Strain Isotherm for Polymer Networks According to the molecular theory of rubber elasticity, the stress τ is related to the relative length α in simple extension according to τ=kT(ν/V)<α>... A Ciferri,PJ Flory - 《Journal of Applied Physics》 被引量: 35发表: 1959年 Model ...
Simulations based on the finite element model are used to investigate whether or not an apparent elastic modulus found as the slope of the initial close to linear stress-strain curve can be related to the real elastic modulus. The numerical results indicate that the apparent modulus is in fact...
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stress-strain stateloadingstructure diagram methodmethod of differentiation of creep curvesProblem statement. The problems of long-term deformation of normal and pre-stressed glass fibre reinforced polymer concrete structures are considered on the basis of stress-time analogy.Results and conclusions. Creep...
[57,58,59,60]. While the TABS model was developed for strain in flow fields occurring in polymer solutions, Zhurkov and Bueche investigated the fracture of polymer chains when exposing solid polymer samples to mechanical stress [61,62,63]. Their observations are in agreement with the TABS ...
b Uniaxial tensile stress–strain curves of the pure squid, heated squid, PAAm gel, and squid/PAAm-6 DN gel along the L- or C-axis. Letters in the bracket (L or C) denote the tensile direction. c Enlarged graph of (b) in the small strain regime (0–2). d Maximum stress and e...