Dear all,
It says in the ASTM Specification that the A307 bolt is originally proved in 1947, and I was told that the tensile strength at the year of 1947 was only 50ksi (now it is 60ksi). The official website of ASTM only keeps the specification records after 1978, and it is already 60ksi. I am...
Dear all,
AASHTO LRFD for bridge design specifies the tire contact area for the design load as a 20in by 10in square. This dimension only applies to design load. I am wondering if there is a computation method to estimate the tire contact area for any random truck. I searched for some...
Hi All,
I am currently evaluating a gusset plate, and the Whitmore section confuses me:
Typically, the Whitmore section can be easily found by the two 30-deg angles, like shown in the figure:
However, I meet a case that the truss member is all the way welded along the gusset plate, and the...
Hi everyone,
Can anyone please provide an example of the Pucher Chart? I am having difficulty in understanding the unit of the Pucher Chart.
For example, the unit for the Pucher Chart is [moment per unit length, such as kN-m/m], so if I want to calculate the moment on a slab in the unit of...
Dear all,
I am using a shell element to simulate a thin plate. I anticipate that the shell element thickness should not affect the section moment, because the closed-form solution for the thin plate bending moment does not involve the plate thickness (the closed-form solution is shown in the...
Hi everyone,
I am doing a project investing the computation methods of the moment on the slabs. I am aware that Pucher Chart is a famous tool in the old days and I am trying to get to know about it.
However, it is kinda confusing for me, and I can barely find any illustration online. Can...
Hi everyone,
I am trying to get the influence surface of a slab, which should be exactly the same as the Pucher chart. For example, I want to use the FEA to get the following influence surface. Can anyone suggest how to accomplish this?
Regards,
Yochael
Hi all,
I am facing difficulty to read the Section Moment from Abaqus.
I am designing a bridge deck, and I want to get the moment effect from Abaqus. I modeled the deck using Shell Element, and the bridge girder is along Y-axis so that I anticipate that I should read the section moment in the...
