scholarly journals State of the problem of numerical modeling of optimal design of load bearing structures of linear pipeline systems

2020 ◽  
Vol 880 ◽  
pp. 012078
Author(s):  
A V Kablukov ◽  
T L Dmitrieva
Keyword(s):  
Numerical Modeling ◽  
Optimal Design ◽  
Load Bearing ◽  
Pipeline Systems

Shape factors and material indices for dimensionally constrained structures Part 1: Beams

2000 ◽  
Vol 214 (2) ◽  
pp. 371-379 ◽  
Author(s):  
S C Burgess
Keyword(s):  
Optimal Design ◽  
Mechanical Design ◽  
Optimal Selection ◽  
Shape Factors ◽  
Load Bearing ◽  
Selection Of

Shape factors and material indices have been recently developed for the optimal design of load-bearing beams and shafts. These shape factors and material indices are generally only applicable where there are no dimensional constraints. However, dimensional constraints are very common in mechanical design because of the integrated nature of modern machinery and equipment. This paper extends the methodology of a previous paper by Ashby by developing the shape factors and material indices for the case of constrained height in beams. The paper also shows that dimensional constraints can have a very significant effect on the optimal selection of material and shape.

Shape factors for beams with misaligned loads

2001 ◽  
Vol 215 (8) ◽  
pp. 981-993 ◽  
Author(s):  
S. C. Burgess ◽  
U. P. Kahangamage ◽  
G Barr ◽  
J. S. Williams
Keyword(s):  
Optimal Design ◽  
Industrial Applications ◽  
Shape Factors ◽  
Load Bearing

Shape factors have been recently developed for the optimal design of load-bearing beams. The shape factors so far developed assume that the loading is ideally aligned, i.e. that the load is exactly perpendicular to a section of beam. However, misalignment of loads is very common in real industrial applications. This paper extends the methodology of shape factors by developing shape factors for misaligned loads. The paper shows that misalignment as small as 1 or 2° can cause significant reductions in efficiency of sections, especially for ‘optimal’ sections such as I-beams. In addition, it is essential for designers to identify the extent of load misalignment, as the most efficient sections for a small misalignment of load can be very different to the most efficient sections for an aligned load.

scholarly journals Substantiation of Optimal Design Parameters for New System Angle Headframes in State-ofthe Art Mines

2019 ◽  
Vol 134 ◽  
pp. 01016
Author(s):  
Elena Kassikhina ◽  
Vladimir Pershin ◽  
Yunliang Tan
Keyword(s):  
Optimal Design ◽  
Circular Cross Section ◽  
Design Solution ◽  
Design Parameters ◽  
Structural Elements ◽  
Load Bearing ◽  
Weight Part ◽  
Steel Angle ◽  
New System ◽  
Significant Factors

The article formulates a new concept for design of the steel angle headframes of the new system for state-of-the art mines. One of the important structural elements of the steel headframe is a rig, installed above mouth of the vertical shaft and designed for equipment and passage of mine conveyances in shaft. A traditional frame rig of rectangular section is the most cumbersome and heavy-weight part of the headframe due its load-bearing. The proposed by the author headframe of multifunctional purpose, that includes a non-load bearing rig of circular cross-section, will allow reducing load on mine mouth and forgoing the sub-frame that greatly simplifies the task of finding an optimal design solution for the structure. There is an analysis of the most significant factors that significantly affect formation of the main design parameters of the sheave wheels and the rig of the examined headframe. The proposed idea of the independently operating structural units, one of which is a circular rig, significantly reduces a number of controlled variables, with which a designer can vary designing a headframe.

Shape factors and material indices for dimensionally constrained structures Part 2: Shafts

2000 ◽  
Vol 214 (2) ◽  
pp. 381-388 ◽  
Author(s):  
S C Burgess
Keyword(s):  
Optimal Design ◽  
Mechanical Design ◽  
Optimal Selection ◽  
Shape Factors ◽  
Load Bearing ◽  
Selection Of

Shape factors and material indices have been recently developed for the optimal design of load-bearing beams and shafts. These shape factors and material indices are generally only applicable where there are no dimensional constraints. However, dimensional constraints are very common in mechanical design because of the integrated nature of modern machinery and equipment. This paper extends the methodology of a previous paper by Ashby by developing the shape factors and material indices for the case of constrained diameter in shafts. The paper also shows that dimensional constraints can have a very significant effect on the optimal selection of material and shape.

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