What is the difference between determinate and indeterminate structures which of them is stable under which type of conditions?
Table of Contents
- 1 What is the difference between determinate and indeterminate structures which of them is stable under which type of conditions?
- 2 What is the main difference between a determinate and an indeterminate structure What is a mechanism?
- 3 Are more real world structures statically determinate or statically indeterminate?
- 4 What are approximate methods for analysis of indeterminate structures?
- 5 How do you know if a structure is internally determinate?
- 6 How to reduce a frame from indeterminate to statically determinate?
What is the difference between determinate and indeterminate structures which of them is stable under which type of conditions?
Determinate structures are analysed just by the use of basic equilibrium equations. By this analysis, the unknown reactions are found for the further determination of stresses. Redundant or indeterminate structures are not capable of being analysed by mere use of basic equilibrium equations.
What is the main difference between a determinate and an indeterminate structure What is a mechanism?
1. When all forces in a structure is determined from equilibrium equations, the structure is known as statically determinate. When the unknown forces in a structure are more than the available equilibrium equations, that structure is known as statically indeterminate structure.
Are more real world structures statically determinate or statically indeterminate?
Number of unknown Reactions or Internal forces > Number of equilibrium equations Note: Most structures in the real world are statically indeterminate.
What are the advantages of statically indeterminate structures?
Statically indeterminate structure have capacity to redistribute the loads. If a part (or member or support) of such a structure fails, the entire structure will not necessarily collapse, and the loads will be redistributed to the adjacent portions of the structure.
What are the disadvantages of indeterminate structures?
thinner members.
What are approximate methods for analysis of indeterminate structures?
Approximate Methods for Analysis of Indeterminate Structures (Ref: Chapter 7) Approximate analysis is useful in determining (approximately) the forces and moments in the different members and in coming up with preliminary designs. Based on the preliminary design, a more detailed analysis can be conducted and then the design can be refined.
How do you know if a structure is internally determinate?
Internally Indeterminate Structures. A truss is statically determinate internally if the total number of members. m=2j – 3. where j= number of joints. A truss having more than (2j – 3) members is statically indeterminate or redundant, the degree of indeterminacy or redundancy being equal to the number of extra members.
How to reduce a frame from indeterminate to statically determinate?
Most of the simplifying assumptions made to reduce a frame from an indeterminate structure to one that is statically determinate depends on the way that the structure deforms under the given loads There is zero moment in the horizontal beam girder at a distance of 0.1L from the left and right supports; and
How do you convert indeterminate to determinate?
Force (Flexibility) Method Convert the indeterminate structure to a determinate one by removing some unknown forces / support reactions and replacing them with (assumed) known / unit forces. Using superposition, calculate the force that would be required to achieve compatibilitywith the original structure.