Composite frame. Plotting diagrams of internal forces M, Q, N
Statically determinate composite frame. Kinematic analysis. Floor plan. Determining support reactions. Characteristic sections, determining internal forces in sections. Plotting diagrams of internal forces M, Q, N
Time codes:
00:00 | Composite statically determinate frame
00:05 | Designating support reactions
01:00 | Kinematic analysis: geometric variability/invariability of the system and the degree of freedom (static indeterminacy) of the system: W = 3•D-2•W-Co
03:20 | Plotting a floor plan. Degrees of freedom of individual parts of the floor plan
16:50 | Finding support reactions of individual parts of the floor plan:
17:35 | Finding support reactions of the secondary frame (simple frame)
27:20 | Finding the support reactions of the main frame (three-hinged frame)
35:10 | Plotting diagrams of internal forces for a given frame under an external load:
Main frame:
37:00 | Designating characteristic sections for the main frame (three-hinged frame)
39:50 | Finding internal forces Q and N using the section method
42:20 | Finding the longitudinal force N in the TIGHTENING
48:30 | Finding internal forces M, Q, N considering two characteristic sections
1:05:20 | Finding internal forces M, Q, N using the node-cutting method
1:12:10 | Finding internal forces Q and N using the node-cutting method
1:16:55 | Finding Internal Forces M, Q, N by the Section Method
1:22:15 | Finding Internal Forces M, Q, N by the Node-Cutting Method
Secondary Frame:
1:29:15 | Designating Characteristic Sections for the Secondary Frame (Simple Frame)
1:32:00 | Finding Internal Forces M and Q by the Section Method
1:35:15 | Finding Internal Forces M and Q by the Section Method
1:37:45 | Finding Internal Forces M, Q, N by the Node-Cutting Method
1:43:20 | Finding Internal Force M by the Section Method
NOTE! This problem is quite complex. Before solving it, it's best to watch other videos on my channel, where methods for finding internal forces in sections are discussed in more detail. This student has taught me about eight classes, so he's quite comfortable plotting internal force diagrams and answering all my questions.
#structural_mechanics #composite_frame #story_diagram #simple_frame #three-hinged_frame_with_tension #internal_forces #support_reactions #section_method #characteristic_sections