Results 201 to 210 of about 220,391 (261)
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Spherically symmetric thin walls
Physical Review D, 1991Assuming a continuous ansatz for the metric we solve the Einstein equation for a thin wall directly by using the method of distributions.
, Khorrami, , Mansouri
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1988
There exists a great variety of possible buckling modes of thin-walled bars. Besides Euler’s buckling and lateral buckling we mention here, first of all, torsional buckling, and a combination of these phenomena. The above buckling modes, called jointly “the overall buckling”, may be investigated under the assumption of undeformable cross-sectional ...
Antoni Gajewski, Michal Zyczkowski
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There exists a great variety of possible buckling modes of thin-walled bars. Besides Euler’s buckling and lateral buckling we mention here, first of all, torsional buckling, and a combination of these phenomena. The above buckling modes, called jointly “the overall buckling”, may be investigated under the assumption of undeformable cross-sectional ...
Antoni Gajewski, Michal Zyczkowski
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Materials Science and Technology, 1988
AbstractThe fundamental concepts of alloy fluidity and liquid flow are examined to highlight the main problems in the production of thin walled castings and to identify areas where research is required. Subjects covered include the problems of entrained oxides of varying degrees of severity, and the introduction of the concept of ‘old’ and ‘new’ oxide ...
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AbstractThe fundamental concepts of alloy fluidity and liquid flow are examined to highlight the main problems in the production of thin walled castings and to identify areas where research is required. Subjects covered include the problems of entrained oxides of varying degrees of severity, and the introduction of the concept of ‘old’ and ‘new’ oxide ...
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Frequency Analysis of Thin-Walled Shear Walls
Journal of the Engineering Mechanics Division, 1971The coupled equations of motion for a thin-walled shear wall of monosymmetric cross section are presented based on thin-walled beam theory. An exact coupled solution is obtained by simultaneously solving a coupled polynomial and set of homogeneous linear algebraic equations, in order to obtain the natural frequencies and mode shapes.
Arthur C. Heidebrecht +1 more
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Wall-Wall Interaction between Thin Magnetic Films
Journal of Applied Physics, 1963Interactions between parallel Néel walls in sandwich-type films were measured by transmission electron microscopy. A lower limit for the true interaction field was measured to be 3 Oe for two 100-Å films of 80–17–3 Ni–Fe–Co separated by a 100-Å layer of carbon. This experiment was limited by the coercive force of the two films.
Harrison W. Fuller, Lynda R. Lakin
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2009
Typical aeronautical structures involve light-weight, thin-walled, beam-like structures that must operate in a complex loading environment where combined axial, bending, shearing, and torsional loads are present. These structures may consist of closed or open sections, or a combination of both.
Bauchau, Olivier, Craig, JI
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Typical aeronautical structures involve light-weight, thin-walled, beam-like structures that must operate in a complex loading environment where combined axial, bending, shearing, and torsional loads are present. These structures may consist of closed or open sections, or a combination of both.
Bauchau, Olivier, Craig, JI
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CIRP Annals, 2001
Abstract The ironing of thin walled cans has been analysed using the slab method and FEM. The results show that there exists a critical reduction ratio at which the ironing process may become unstable (or not self-centring). The results obtained show that the critical reduction ratio is heavily influenced by the geometry of the ironing die (semi-die ...
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Abstract The ironing of thin walled cans has been analysed using the slab method and FEM. The results show that there exists a critical reduction ratio at which the ironing process may become unstable (or not self-centring). The results obtained show that the critical reduction ratio is heavily influenced by the geometry of the ironing die (semi-die ...
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2013
The chapter deals with static buckling, postbuckling behaviour and dynamic buckling of thin-walled column with open cross-section made of isotropic and orthotropic material. The analysed columns were subjected to compressed load. The results was obtained using finite element method and analytical-numerical method.
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The chapter deals with static buckling, postbuckling behaviour and dynamic buckling of thin-walled column with open cross-section made of isotropic and orthotropic material. The analysed columns were subjected to compressed load. The results was obtained using finite element method and analytical-numerical method.
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1997
The thin-walled structures of interest in this chapter are generally enclosed regions, as typified by an aircraft fuselage. They are modeled as combinations of folded plates and cylindrical shell segments as shown in Figure 8.1. Other examples of structures which fall into this category include plates with stringers, corrugations, channels, ducts ...
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The thin-walled structures of interest in this chapter are generally enclosed regions, as typified by an aircraft fuselage. They are modeled as combinations of folded plates and cylindrical shell segments as shown in Figure 8.1. Other examples of structures which fall into this category include plates with stringers, corrugations, channels, ducts ...
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Aircraft Engineering and Aerospace Technology, 1952
There is quite a lot of literature showing how to find the distribution of shear stress on a thin multi‐walled section under the action of an applied torque. In actual fact, however, before this torque can be assessed, it is necessary to know the position of the flexural axis of the section, the flexural axis being so positioned that when a shear is ...
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There is quite a lot of literature showing how to find the distribution of shear stress on a thin multi‐walled section under the action of an applied torque. In actual fact, however, before this torque can be assessed, it is necessary to know the position of the flexural axis of the section, the flexural axis being so positioned that when a shear is ...
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