Calculation of Stresses in Laminated Materials under Transverse Bending

1989 ◽  
pp. 658-672 ◽  
Author(s):  
A. E. Bogdanovich ◽  
E. V. Yarve
Keyword(s):  
Transverse Bending ◽  
Laminated Materials

New Research on the Use of Hardening Plastics for Aircraft Construction

1940 ◽  
Vol 44 (349) ◽  
pp. 44-73
Author(s):  
Wilhelm Kuech
Keyword(s):  
Strength Properties ◽  
Dynamic Loads ◽  
Absorbed Energy ◽  
Good Strength ◽  
Different Temperatures ◽  
Bonding Properties ◽  
Static And Dynamic Loads ◽  
Impact Bending ◽  
New Research ◽  
Laminated Materials

Laminated materials incorporating plastics seem to be especially well suited lor highly stressed aircraft components, by reason of their good strength properties. Paper, fabric and wood veneers treated with plastics on a phenolic basis were tested with regard to their strength, especially in bending, shear, absorbed energy in impact bending, notching strength and in their resistance against moisture. Further, the behaviour of compressed plastics was studied at different temperatures under static and dynamic loads. A part of the research was extended to pure phenol resin and to thermoplastics based on methacrylate and polyvinylchloride. The bonding properties of laminated compressed plastics were established. Concluding, some experiments relating to the practical manufacture of aeroplane components are communicated.

The Flexural Centre or Centre of Shear

1954 ◽  
Vol 58 (526) ◽  
pp. 728-728
Author(s):  
J. A. Jacobs
Keyword(s):  
Transverse Bending ◽  
Bending Loads ◽  
The Subject ◽  
Channel Beam

Professor koiter, in his note (January 1954 Journal) states that I (April 1953 Journal) was “ apparently unaware” of Weber's two papers on the subject, published in 1924 and 1926. I was aware of the papers, having cited them in the bulletin by Seely, Putnam and Schwalbe on “The Torsional Effect of Transverse Bending Loads on Channel Beams.“Some references in addition to those already cited may be of interest. The unorthodox behaviour of a channel beam in bending was observed and reported by C. Bach in 1909–1910. A. and L. Foppl wrote a section on the “Schubmittelpunkt” in their book “Drang und Zwang.“

The transverse bending of single crystals of aluminum

JOM ◽  
1949 ◽  
Vol 1 (10) ◽  
pp. 710-720 ◽  
Author(s):  
M. K. Yen ◽  
W. R. Hibbard
Keyword(s):  
Single Crystals ◽  
Transverse Bending

Thermomechanical Analysis of the Welding Process Using the Finite Element Method

1975 ◽  
Vol 97 (3) ◽  
pp. 206-213 ◽  
Author(s):  
E. Friedman
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Welding Process ◽  
Thermomechanical Analysis ◽  
Analytical Models ◽  
The Finite Element Method ◽  
Nonuniform Temperature ◽  
Butt Weld ◽  
Transverse Bending ◽  
Finite Element Formulations

Analytical models are developed for calculating temperatures, stresses and distortions resulting from the welding process. The models are implemented in finite element formulations and applied to a longitudinal butt weld. Nonuniform temperature transients are shown to result in the characteristic transverse bending distortions. Residual stresses are greatest in the weld metal and heat-affected zones, while the accumulated plastic strain is maximum at the interface of these two zones on the underside of the weldment.

On the Stresses in a Notched Strip

1952 ◽  
Vol 19 (2) ◽  
pp. 141-146
Author(s):  
Chih-Bing Ling
Keyword(s):  
Infinite System ◽  
Linear Equations ◽  
Numerical Results ◽  
Theoretical Solution ◽  
Experimental Results ◽  
System Of Linear Equations ◽  
Transverse Bending ◽  
Longitudinal Tension

Abstract In a previous paper by the author (1), a theoretical solution for a notched strip under longitudinal tension is given. The result demands the solution of an infinite system of linear equations. A considerable amount of labor is involved in solving such a system. It seems, however, that the labor can be diminished by adapting to the solution a process known as the promotion of rank. In this paper such a process is described and then applied to solve the problem of a notched strip under transverse bending. The solution of this problem seems also to be new. The numerical results obtained are compared graphically with the experimental results available.

scholarly journals Graphite Laminated Materials Strength Properties and Energy Characteristics of Polymer Binders

2017 ◽  
Vol 18 (4) ◽  
pp. 311
Author(s):  
I.M. Karzov ◽  
Yu.G. Bogdanova ◽  
S.V. Filimonov ◽  
O.N. Shornikova ◽  
A.P. Malakho
Keyword(s):  
Tensile Strength ◽  
Stainless Steel ◽  
Surface Energy ◽  
Sheet Material ◽  
Strength Properties ◽  
Work Of Adhesion ◽  
Silicone Resin ◽  
Energy Characteristics ◽  
Polymer Binders ◽  
Laminated Materials

The approach for graphite laminated materials strength properties prediction using contact angle measurements was proposed. The tensile strength of laminated materials made of graphite foil and stainless steel with acrylic and silicone adhesives was measured. It was shown that tensile strength depends on energy characteristics of polymer binders, which can be determined by simple and express wetting method. It was found that the highest values of tensile strength, strength of adhesion and the work adhesion to graphite and stainless steel were provided by acrylic adhesive MBM-5C. The delamination occurred when graphite and stainless steel sheets were connected with low surface energy silicone resin, γ = 23 mJ/m2,<br />what was not able to maintain sufficient adhesion level to the both types of attached surfaces: polar steel and non-polar graphite. It was demonstrated that the calculation of the work of adhesion to polar and non-polar model liquids (water and octane respectively) can be applied to optimize the choice of polymer binder and design of laminated materials. It’s quite important that the proposed technique doesn’t require to determine free surface energy for each type of sheet material which is especially difficult and complex task if laminate consists of several different layers.

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