A three-dimensional graphical method for shear strain analysis

The efficiency of graphical methods for strain analysis depends merely on its simplicity and accuracy. For most strain definitions, the Mohr circle has proved to be the most powerful graphical technique. Unfortunately, its three-dimensional form has limitations concerning the determination of the shearing strain components on a general oblique plane. In this paper, the various deformation quantifiers and the existing extensions to Mohr's method which account for its drawbacks are briefly reviewed. A novel proposal to be appended to Mohr's original construction, allowing its complete generality, is given. It has the form of a simplified complementary triangular construction. A mathematical formulation of the suggested graphical techniques on the basis of Cauchy's formula and vector analysis is carried out.

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Three-Dimensional Variation Diagrams for Control of Calculations in Optimum Design

Journal of Engineering for Industry ◽

10.1115/1.3610061 ◽

1967 ◽

Vol 89 (3) ◽

pp. 391-397 ◽

Cited By ~ 1

Author(s):

R. C. Johnson

Keyword(s):

Optimum Design ◽

Mechanical Design ◽

Three Dimensional ◽

Diagram Technique ◽

General Technique ◽

Variation Diagram ◽

Graphical Technique ◽

Dimensional Variation ◽

Torsion Bar

This paper presents and illustrates a graphical technique for the control of calculations in the procedure of optimum mechanical design. This three-dimensional variation diagram technique minimizes the number of calculations required for the determination of the optimum design, and the general technique is applicable to many problems. Specific practical examples are given for the optimum design of a torsion bar and for the optimum design of a gearset.

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A Nondestructive Three-Dimensional Strain-Analysis Method

Journal of Applied Mechanics ◽

10.1115/1.3640471 ◽

1961 ◽

Vol 28 (1) ◽

pp. 83-86 ◽

Cited By ~ 23

Author(s):

A. J. Durelli ◽

I. M. Daniel

Keyword(s):

Stress Analysis ◽

Three Dimensional ◽

Strain Analysis ◽

Good Precision ◽

Analysis Method ◽

Strain Fields ◽

Nondestructive Determination

The objective of this paper is to develop the technique of the embedded grid for three-dimensional strain and stress analysis. The application to the case of a sphere subjected to diametral loading is described and results are compared with theoretical and photoelastic ones. The limitations of the method are outlined and suggestions for improvement made. As it stands now, the method allows the nondestructive determination of three-dimensional strain fields with good precision. The determination of stresses, however, is less precise.

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Conformation of Ribosomes from Escherichia Coli

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100051062 ◽

1974 ◽

Vol 32 ◽

pp. 210-211

Author(s):

M. Boublik ◽

W. Hellmann ◽

F. Jenkins

Keyword(s):

Binding Sites ◽

Ribosomal Proteins ◽

Fluorescent Dyes ◽

Protein Biosynthesis ◽

Three Dimensional ◽

Spatial Arrangement ◽

Dimensional Structure ◽

Complete Understanding ◽

And Function

The present knowledge of the three-dimensional structure of ribosomes is far too limited to enable a complete understanding of the various roles which ribosomes play in protein biosynthesis. The spatial arrangement of proteins and ribonuclec acids in ribosomes can be analysed in many ways. Determination of binding sites for individual proteins on ribonuclec acid and locations of the mutual positions of proteins on the ribosome using labeling with fluorescent dyes, cross-linking reagents, neutron-diffraction or antibodies against ribosomal proteins seem to be most successful approaches. Structure and function of ribosomes can be correlated be depleting the complete ribosomes of some proteins to the functionally inactive core and by subsequent partial reconstitution in order to regain active ribosomal particles.

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Stress Analysis of Tire Sections

Tire Science and Technology ◽

10.2346/1.2137527 ◽

1996 ◽

Vol 24 (4) ◽

pp. 349-366 ◽

Cited By ~ 4

Author(s):

T-M. Wang ◽

I. M. Daniel ◽

K. Huang

Keyword(s):

Finite Element ◽

Internal Pressure ◽

Stress Analysis ◽

Strain Analysis ◽

Experimental Stress ◽

Inflation Pressure ◽

Substantial Agreement ◽

Finite Element Stress Analysis ◽

Strain Components ◽

Fringe Patterns

Abstract An experimental stress-strain analysis by means of the Moiré method was conducted in the area of the tread and belt regions of tire sections. A special loading fixture was designed to support the tire section and load it in a manner simulating service loading and allowing for Moiré measurements. The specimen was loaded by imposing a uniform fixed deflection on the tread surface and increasing the internal pressure in steps. Moiré fringe patterns were recorded and analyzed to obtain strain components at various locations of interest. Maximum strains in the range of 1–7% were determined for an effective inflation pressure of 690 kPa (100 psi). These results were in substantial agreement with results obtained by a finite element stress analysis.

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On a New Graphical Method of Determining the Connectedness in Three Dimensional Design.

10.21236/ada186299 ◽

1985 ◽

Author(s):

Subir Ghosh

Keyword(s):

Graphical Method ◽

Three Dimensional

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Three Dimensional Structure Determination of Botulinum Neurotoxin

10.21236/ada368202 ◽

1999 ◽

Author(s):

Raymond C. Stevens

Keyword(s):

Structure Determination ◽

Botulinum Neurotoxin ◽

Three Dimensional ◽

Dimensional Structure ◽

Three Dimensional Structure

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A Graphical Method for Storage Coefficient Determination from Quasi-Steady State Flow Data

Hydrology Research ◽

10.2166/nh.1996.0008 ◽

1996 ◽

Vol 27 (4) ◽

pp. 247-254 ◽

Cited By ~ 2

Author(s):

Zekâi Şen

Keyword(s):

Steady State ◽

Graphical Method ◽

Pumping Test ◽

Quasi Steady State ◽

Flow Data ◽

Steady State Flow ◽

Storage Coefficient ◽

State Flow ◽

Aquifer Test

A simple, approximate but practical graphical method is proposed for estimating the storage coefficient independently from the transmissivity value, provided that quasi-steady state flow data are available from a pumping test. In the past, quasi-steady state flow distance-drawdown data have been used for the determination of transmissivity only. The method is applicable to confined and leaky aquifers. The application of the method has been performed for various aquifer test data available in the groundwater literature. The results are within the practical limits of approximation compared with the unsteady state flow solutions.

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