Wire & Rope Design

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Computer Programs for Ropes Design

Enlargement

NEW VERSION 2.0.

• 1. This program solves the problems of calculation, checking and drawing of practically all the ropes known:
  
  
  • 1.1. Standards, Seale, Warrington, Filler, Warrington- Seale, Compound Warrington with textile, artificial (sisal or polipropilene) and metallic core.
  • 1.2. Ropes made with compacted strands, triangular, elliptical, flattened and combined strands.
  • 1.3. Ropes made with wires of an unique or multiple strength.
  • 1.4. Multilayer and non rotating ropes..
    
    
• 2. All this ropes are drawn (with different amplifications), on one hand the strands, and on the other the ropes. Also it’s possible to check the clearances or gaps between wires and strands. This drawing is made directly during the calculation.
  
  
• 3. All the strands and ropes are calculated in order to meet the requirements of DIN, BS, ISO standards. And it’s possible to calculate the ropes and strands with the wished gaps between wires and strands as a function of the tolerance of wires. The calculation in order to meet the standards may be automatically or manually made.
  For the determination of the diameter of wires, it’s used.
  
  
  • 3.1. Either an exact dimension of the wires for ropes with extreme safety working conditions.
  • 3.2. Or a reduced (standarized) series of diameters, that cam be fixed by the user, in order to reduce the stocks of wire.
    
    
• 4. There is an special chapter devoted to the study of stresses produced on the rope by the flexion over a drum of different ratios between the diameter of the drum and the diameter of the rope. So, in certain cases, may be constructed ropes of high endurance for special purposes.
  
  
• 4.- In all the ropes, It’s calculated the twisting moment of the ropes under load. .
  
  
• 4.1-In the non rotating ropes, it’s previously determinate the small twisting angle due to the untwisting torque under load for various loads, and selects the minimum angle compatible with the stability of the rope. The program evaluates the torque or torsion moment of the rope under an axial load. Generally , in other studies, only the strands (and generally 1+6) are considered, without study the more complicated cases of ropes with many layers, such as WS, multilayer non rotating ropes, etc.
  
  
  • 4.1.1. We obtain expressions that are applicable to any strand or rope, without limitation of composition.
  • 4.1.2. We demonstrate that the long ratios Lay/Diameter rope (that conditionates the uncabling of the rope) involves a small torque, while the short ratio implicates, a bigger torque.
  • 4.1.3. So, the correct solution is a compromise problem that can be easylly solved by the program.
    
    
• 5. The system includes two ways for drawing the sections of the strands and ropes, with possibility of zooming:
  
  
  • 5.1 The first one , it’s provided by the own program., as said in 2
  • 5.2 In the second one, the system generates files that, imported in AUTOCAD, draws AUTOMATICALLY in this last system all the ropes.
  • In the DEMO program they are included examples.
    
    
• 6. Finally, the last but non the least, the use of the system allows an important saving of wire, that. In a determinate case, it has produced a saving of more than 29.700.000 pts (178 270 Euros or 267 000 US $ at present) in a year. To see the information included in the documentation.