The discussion revolves around the displacement of a frame under the influence of two horizontal loads, specifically addressing why the author uses the notation Δ1 + Δ2 for the displacement at point C instead of just Δ2. The subject area pertains to mechanics and structural analysis.
The discussion is ongoing, with participants raising questions about the author's definitions and the potential simplifications that arise from them. Some participants express confusion regarding the necessity of including Δ1 in the displacement at C, while others suggest that the author's approach may lead to simpler equations.
There is a focus on the simultaneous application of the two horizontal loads and how this affects the definitions of displacement. Participants are considering the implications of these definitions on the overall analysis without reaching a consensus.
why The author chooses to define Δ2 as C's additional displacement beyond that of B ? why can't the author define the displacement at C = Δ2 only ??haruspex said:
If you follow through the equations, some of them turn out simpler with the author's choice. Whether it is simpler overall I have not tried to determine.fonseh said:
