19856510 Statics Lecture 12 Simple Trusses Method of Joints
Transcript of 19856510 Statics Lecture 12 Simple Trusses Method of Joints
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Simple Trusses
Two-Force Member - When a member is subjected to no couple moments and forces are only applied at two points.
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Truss - A structure composed of slender members joined together at their end points.
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Trusses in Puerto Rico
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Assumptions: 1) All loadings are applied at the joints.2) The members are joined together by smooth pins.
Therefore: Each truss member acts like a two-force member,and their forces must be directed along their longitudinal axis.
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Simple Truss - Is constructed by starting with a basic triangular element.
Methods for Truss Analysis 1) Method of Joints2) Method of Sections
Method of Joints - The joints of a truss can each be analyzed as particles.
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Example Determine the force in each member of the truss. Indicate if the members are in tension or compression.
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Example Determine the force in each member of the truss. Indicate if the members are in tension or compression. Take P1 = 3 KN and P2 = 2.7 KN.
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