Rigidity Modulus By Static Method Viva Questions
Enrique Fats
Structural analysis is the study of the behavior of structures under loads. It involves the calculation of stresses and strains in a structure to ensure that it can support the loads that will be placed on it.
Static loads are loads that do not change with time, while dynamic loads change with time. Examples of static loads include dead loads and live loads, while examples of dynamic loads include wind loads and seismic loads.
Determinate structures are structures where the forces and reactions can be calculated using statics equations alone. Indeterminate structures are structures where the forces and reactions cannot be calculated using statics equations alone and require additional analysis.
Shear force is a force that is applied parallel to the cross-section of a structural element while bending moment is a force that is applied perpendicular to the cross-section of a structural element.
A statically determinate beam is a beam where the forces and reactions can be calculated using statics equations alone, while a statically indeterminate beam is a beam where the forces and reactions cannot be calculated using statics equations alone and require additional analysis.
A simply supported truss is a truss that is supported on both ends, while a cantilever truss is a truss that is supported on only one end, with the other end projecting out into space. Simply supported trusses are typically used to span shorter distances, while cantilever trusses are typically used to span longer distances or to support loads that cannot be supported by a simply supported truss.
The moment distribution method is a structural analysis technique used to calculate the moments and shears in a statically indeterminate structure. It involves distributing the moments in the structure until equilibrium is reached.
A bending moment diagram is a graph that shows the variation of bending moment along the length of a structural element. It is used to determine the maximum bending moment and the location of maximum bending moment in the element.
A shear force diagram is a graph that shows the variation of shear force along the length of a structural element. It is used to determine the maximum shear force and the location of maximum shear force in the element.
A statically determinate truss is a truss where the forces and reactions can be calculated using statics equations alone, while a statically indeterminate truss is a truss where the forces and reactions cannot be calculated using statics equations alone and require additional analysis.
Stress is the internal force per unit area that a material is subjected to. In structural analysis, it is usually measured in units of force per unit area, such as newtons per square meter or pounds per square inch.
In structural analysis, strain refers to the deformation or change in shape that a structural element undergoes when subjected to an external load. It is a measure of how much the element has been stretched, compressed, or twisted relative to its original size or shape. Strain is typically measured as a ratio of the change in length, angle, or other geometric property of the element to its original length, angle, or other geometric property.
A load path is the route that a load takes through a structure from its point of application to its supports. It is important to ensure that the load path is continuous and that the load is transferred safely to the supports.
Linear analysis is a simplified approach that assumes that the behavior of a structure is linear and that the stresses and strains are proportional to the loads applied. Nonlinear analysis takes into account the nonlinear behavior of materials and structures, such as plastic deformation and buckling.
Elastic deformation is a reversible deformation that occurs when a load is applied to a material and then removed. Plastic deformation is a permanent deformation that occurs when a material is subjected to a load beyond its yield point.
Truss analysis is a structural analysis technique used to determine the forces and reactions in a truss. It involves applying the principles of statics to the individual members and joints of the truss.
A pin connection is a type of structural connection that allows for rotation between two or more structural elements, while a fixed connection is a type of structural connection that does not allow for rotation between two or more structural elements.
A cantilever is a beam that is supported at one end and has no support at the other end, while a propped cantilever is a beam that is supported at one end and has a support at some distance from the other end.
In structural analysis, a point load is a concentrated load that is applied at a single point on a structural element, while a uniformly distributed load is a load that is spread out evenly over the entire length or area of the element. Point loads are typically used to simulate the effect of a single force, while uniformly distributed loads are used to simulate the effect of loads that are evenly distributed over a surface or length of an element. For example, a point load may represent the weight of a person standing on a beam, while a uniformly distributed load may represent the weight of a snowdrift on a roof.
In structural analysis, an elastic deformation is a temporary deformation that occurs when a structural element is subjected to an external load but returns to its original shape once the load is removed. An elastic deformation is proportional to the applied load and is reversible, meaning that the element will return to its original shape when the load is removed.
On the other hand, a plastic deformation is a permanent deformation that occurs when a structural element is subjected to a load beyond its elastic limit. A plastic deformation is not proportional to the applied load and is irreversible, meaning that the element will not return to its original shape once the load is removed. In other words, a plastic deformation causes a permanent change in the shape and properties of the structural element.
A rigid frame is a type of structural frame that is designed to resist lateral loads by using rigid connections between its members. A braced frame, on the other hand, uses diagonal braces to resist lateral loads.
An internal load is a load that is generated within a structure due to the applied external loads and the resulting stresses and strains. An external load is a load that is applied to a structure from outside.
A seismic load is a load that is generated by an earthquake or other seismic event. It is an important consideration in the design of buildings and other structures located in areas that are prone to earthquakes.
The moment distribution method is a method of structural analysis that is used to calculate the internal forces and bending moments in a continuous beam or frame. It involves distributing the moments in the structure based on the stiffness of each member and the relative rotation at each joint.
A redundancy is a situation in which a structure has more members or connections than are necessary to resist the applied loads. Redundancies can be either beneficial or detrimental to the performance of a structure, depending on the specific design and loading conditions.
A truss is a structural element that is composed of a series of interconnected triangles, while a beam is a structural element that is designed to resist bending. Trusses are typically used to span longer distances with a lighter weight, while beams are typically used for shorter spans or to support loads with greater bending moments.
A concentrated load is a load that is applied to a small area or point on a structural element. It is usually represented as a force vector and is used to simulate the effect of a single force acting on the element.
Torsion is a type of deformation that occurs when a structural element is subjected to a twisting force. It is an important consideration in the design of shafts, columns, and other structural elements that are subjected to torsional loads.
Stability analysis is the analysis of the ability of a structure to resist collapse due to lateral loads, such as wind or earthquake loads. It involves evaluating the stability of the structure under different loading conditions and ensuring that it can withstand the expected loads without collapsing.
A cable is a type of structural element that is designed to resist tensile loads. It is typically composed of one or more steel wires or strands that are twisted or braided together to form a flexible and strong structure.
A failure mode is a specific type of failure that occurs in a structural element or system under a specific set of loading conditions. Failure modes can include bending failure, buckling failure, shear failure, and others, depending on the specific design and loading conditions.
A yield point is the point at which a structural element begins to deform plastically under an applied load. It is the stress or load at which the material of the element begins to yield or deform permanently.
A plastic hinge is a region of a structural element that has undergone plastic deformation and is able to rotate without further resistance under an applied load. Plastic hinges are often used in the analysis of indeterminate structures, where they help to redistribute the internal forces and moments to other parts of the structure.
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