The Modular Mold Resistant Difference
In order to investigate the strength differences of modular panels with 5×50 straps and 6×50 straps, a 100×50 modular panel with 5cm and 6cm straps, 5 mm in thickness, were evaluated by taking advantage of SPA and Shell Element software. In this study, the concrete pressure is computed from the relation mentioned in ACI guidelines which takes the following form:
- Each panel has been studied in two situations:
A) Panel relying on only three pins and wedges in all the length and two pins and wedges in all the width.
B) Besides the pins and wedges used in the previous
state, two upper and lower pipes were also applied as supports to the panel.
Concrete pressure was inserted in a nodal manner in Shell Element and because these elements are assigned 5×5 dimensions in the modular panel, the force exerted on the middle nodes and lateral nodes were 12.5 kg and 6.25 kg, respectively.
In both of the above modes, the forces are altogether more dominant in a single node. In this node, the Fx and Fz forces were found most intensively imposed on the hardener plate and they cause tensile and compressive stress but the stress caused by Fy was of the shear stress. Also, the My and Mz moment anchors exert their effect about the weak hardener axis and cause a considerable amount of stress to emerge but Mx anchor exerts its effect about the strong axis and therefore it causes trivial stress. Therefore, the maximum stress can be calculated as shown in the formula below. Also, the summary of the above analyses results are given in the following part.
Panel only relying on peripheral pins and wedges
a) Maximum deformation
– In 6cm strap panels
– In 5cm strap panels
Additional deformation percentage in the panel with
5×50 strap as compared to 5×60 strap
b) Maximum Stress:
– In 6cm strap panels
– In 5cm strap panels
Additional stress percentage in the panel with 5×50 strap as compared to 5×60 strap
