Deformation analysis

The general deformation analysis of a laminate is very similar to the general deformation analysis for a single ply. 

Shear-stress-shear-strain curves typical of fiber-reinforced epoxy resins are quite nonlinear, but all other stress-strain curves are essentially linear. Hahn and Tsai [6-48] analyzed lamina behavior with this nonlinear deformation behavior. Hahn [6-49] extended the analysis to laminate behavior. Inelastic effects in micromechanics analyses were examined by Adams [6-50]. Jones and Morgan [6-51] developed an approach to treat nonlinearities in all stress-strain curves for a lamina of a metal-matrix or carbon-carbon composite material. Morgan and Jones extended the lamina analysis to laminate deformation analysis [6-52] and then to buckling of laminated plates [6-53]. 

The necking mechanism has also been investigated using theoretical and numerical techniques. The theoretical approach, based on small deformation analysis (Barthes-Biesel and Acrivos, 1973) for the case of low Ca or high p shows the formation of lobes on the drop for Ca > Cacrit - Numerical techniques (Rallison, 1981) for p = 1 give similar results. The general conclusion is confirmation of the experimentally determined curve for Cacrit the drops in this case may break up rather than extend indefinitely. 

Algebraic Geometry Antenna Theory Celestial Mechanics Computer-Aided Design Control Theory Deformation Analysis Econometrics... 

J. Gu et al., H-bonding patterns in the platinated guanine-cytosine base pair and guanine-cytosine-guanine-cytosine base tetrad An electron density deformation analysis and aim study. J. Am. Chem. Soc. 126, 12651-12660 (2004)... 

Strain mapping and deformation analysis of "L " type joints. 

The formation of a tablet during the loading phase causes the system to be under initial stress at the beginning of the deformation analysis. The initial stress has many important implications to the analysis of tablets during unloading and relaxation (99,103,104). For three-dimensional multi-axial loading conditions, Hook s law can be written as ... 

Deformation analysis of graded powder compacts during sintering... 

MODELLING GROUNDWATER PRESSURE AND THERMAL LOADING IN THREE-DIMENSIONAL DISCONTINUOUS DEFORMATION ANALYSIS... 

Jang, H.I. Lee, C.I. 2002. Development of a three-dimensional discontinuous deformation analysis technique and its application to toppling failure. Proc. of the 5 intern, conference on analysis of discontinuous deformation, Wuhan, China, pp.225-229. 

Jing, L.R., Ma, Y. Fang, Z.L. 2001. Modeling of fluid flow and solid deformation for fractured rocks with discontinuous deformation analysis (DDA) method. Int. J Rock Mech Min Sci 38 pp.343-355. 

Kim, Y.I., Amadei, B. Pan, E. 1999. Modeling the effect of water, excavation sequence and rock reinforcement with discontinuous deformation analysis. Int J Rock Mech Min Sci 36 pp.949-970. 

Lin, C.T., Amadei, B., Jung, J. Dwyer, J. 1996. Extensions of discontinuous deformation analysis for jointed rock masses. Int J Rock Mech Min Sci 33 pp.671-694. 

Shi, G.H. 1988. Discontinuous deformation analysis-a new numerical model for the statics and dynamics of block system. Ph.D. Thesis, Dept, of Civil Engineering, University of California, Berkeley. 

Goulboume NC, Mockensturm EM, Frecker MI (2007) Electro-elastomers large deformation analysis of silicone membranes. Int J Solids Struct 44 2609... 

When residual stresses are ignored, large-deformation analysis of thick-waUed blood vessels predicts steep distributions in ag and Uz through the vessel wall, with the highest stresses at the interior. This prediction is considered significant because high tensions in the inner wall could inhibit vascularization and oxygen transport to vascular tissue. 

Dong, C., Skalak, R., Sung, K.-L.R, Schmid-SchSnbein, G.W. and Chien, S. 1988. Passive deformation analysis of human leukocytes. /. Biomech. Eng. 110 27-36. 

The layer sequence and the thickness of each layer used in the model are given in Table 1. Physical and mechanical properties selected to represent the coal and rock masses and to perform stress-deformation analysis are also shown in Table 1. The values selected to represent Young s Modulus, cohesion and tensile strength is about 30% less than the intact rock values. The value used to represent Poisson s ratio is about 20% higher than the intact rock value. Therefore, the selected mechanical property values represent the equivalent continuum properties of each rock mass. 

For URPs, the emphasis is somewhat different. Due to their relatively low stiffness, component deformations under load may be much higher than for metals and the design criteria in step (b) are often defined in terms of maximum acceptable deflections. Thus, for example, a metal panel subjected to a transverse load may be limited by the stresses leading to yield and to a permanent dent. Whereas a URPs panel may be limited by a maximum acceptable transverse deflection even though the panel may recover without permanent damage upon removal of the loads. Even when the design is limited by material failure it is usual to specify the materials criterion in terms of a critical failure strain rather than a failure stress. Thus, it is evident that strain and deformation play a much more important role for URP than they do for metals. As a consequence, step (a) is usually required to provide a full stress/strain/ deformation analysis and, because of the viscoelastic nature of plastics, this can pose a more difficult problem than for metals. 

Deformation analysis Examination of building deformations, engineering and local geodynamics, motions of the lithosphere. Problems with evaluation and interpretation. 

The 5th International Symposium of Deformation Analysis together with the Canadian symposium of subterranean geometry and damage done by mining - an international interdisciplinary meeting. Fredericton, N.B., Canada, 6th-9th June 1988. 

Data Acquisition for Deformation Analysis. Joint symposium of the commission 6C together with the Polish associations of geodesy and photogrammetry and remote sensing. Katowice, Poland, 18th-20th April 1990. 

Considering resolution 6/1-1986 of the XVIIIth FIG Congress and the final report of the ad-hoc-committee Deformation Analysis ,... 

---