Results 261 to 270 of about 185,484 (301)

Sheet Metal Forming Limit Under Stretch-Bending

ASME 2008 International Manufacturing Science and Engineering Conference, Volume 1, 2008
The Forming Limit Diagram (FLD) as developed by Keeler etc. has been widely used to assess sheet metal failure during a variety of forming operations. Its theoretical and empirical foundation is based on localized necking under biaxial loading for the sheet metal. While the in-plane deformation is generally the dominant mode for most forming operations,
Z. Cedric Xia, Danielle Zeng
openaire   +1 more source

Convective heat transfer at a stretching sheet

Acta Mechanica, 1993
Analysis of convection flow and heat transfer of a viscous heat-generating fluid near an infinite vertical stretching surface is carried out. The effects of free convection and the presence of heat generation/absorption on the flow and heat transfer characteristics are considered.
Vajravelu, K., Nayfeh, J.
openaire   +3 more sources

Void Nucleation Effects in Biaxially Stretched Sheets

Journal of Engineering Materials and Technology, 1980
The effects of void nucleation occurring during the deformation history on forming limit curves are considered for both in-plane and punch stretching employing a constitutive model of a porous plastic solid. Both plastic strain controlled and stress controlled nucleation processes are simulated by a two parameter void nucleation criterion. For in-plane
C. C. Chu, A. Needleman
openaire   +1 more source

Bending and stretching of thin viscous sheets

Journal of Fluid Mechanics, 2001
Thin viscous sheets occur frequently in situations ranging from polymer processing to global plate tectonics. Asympotic expansions in the sheet's dimensionless ‘slenderness’ ε [Lt ] 1 are used to derive two coupled equations that describe the deformation of a two-dimensional inertialess sheet with constant viscosity μ and variable thickness ...
openaire   +1 more source

Polarization spectra in stretched polymer sheets—IV

Tetrahedron, 1974
Abstract Polarized spectra of benzo[k]fluoranthene and two of its aza analogs are obtained from measurements of dichroism in stretched polyethylene sheets and interpreted by means of Pariser-Parr-Pople calculations. Aza substitution in the solute has a curiously large effect on the degree of orientation.
J. Michl, J.H. Eggers
openaire   +1 more source

The stretch-bend forming of sheet metal

Journal of Applied Metalworking, 1981
Formability tests simulating stretch-bend conditions have been developed for simple angular and hemispherical contours. The tests were designed to determine the influence of material and geometrical variables on sheet metal formability. Data obtained from the tests have produced families of curves relating the punch radius (R) and sheet thickness (t ...
openaire   +1 more source

Micropolar Flow Past a Stretching Sheet

2013
This paper studies the flow of an incompressible, constant density micropolar fluid past a stretching sheet. The governing boundary layer equations of the flow are solved numerically using a globally convergent homotopy method in conjunction with a least change secant update quasi- Newton algorithm.
Sankara, Kishore Kumar, Watson, Layne T.
openaire   +1 more source

The Stretched Rubber Sheet

Journal of Scientific Instruments, 1947
J H Fremlin, J Walker
openaire   +1 more source

Light sheet fluorescence microscopy

Nature Reviews Methods Primers, 2021
Ernst H K Stelzer, Frederic Strobl, Bo-Jui Chang   +2 more
exaly  

Stretch Forming of Plastics Sheet

Journal of the Society of Mechanical Engineers, 1970
Yukisaburo YAMAGUCHI, Ko OYANAGI
openaire   +1 more source