Hi All,
I need to sharpen the pencil regarding a spar to skin joint analysis.
I have a global fem with CQUAD elms for the spar webs and skins and rod elms for the spar caps and stringers. There is one skin element between stringers.
I already have a freebody force extraction in Patran for the...
I am about to set up a model the fuselage cross section of a 767 to determine the expansion between the passenger floor and the crown of the aircraft under a 9.1 psi pressure.
Does anyone know roughly what sort of magnitude of expansion I should get so I can be confident that my model is...
Hi,
I have a panel 10 inches long 4 inches wide subjected to an out of plane pressure. The panel is pinned along the 4 inch sides and free on the long edges. When the panel deforms it takes up a curved shape and because of this curvature the projected length view from above of the panel should...
Hi, I have reposted this here from the aerospace fourm.
I have a MS20001A-9 Hinge that is being used on a door in a galley. This is a "Piano" type hinge.
It is maunfactured from Extruded 7075-T73511.
I want to modify the hinge from the As Recieved condition by bending one leg of the hinge so...
I have a MS20001A-9 Hinge that is being used on a door in a galley. This is a "Piano" type hinge.
It is maunfactured from Extruded 7075-T73511.
I want to modify the hinge from the As Recieved condition by bending one leg of the hinge so the fasteners attaching it to the door are hidden from...
I have an extruded L angle and I am going to bend one leg to create a U shape. Material is 7075-T73511 L angle leg thickness 0.050 inches.
Our forming specification says that for extrusions less than 0.5 inches thick it is acceptable to bend them using the same bend radi as sheet.
Thus I...
Hi,
I want to display in Patran, as a vector, the bending moment of a bar element at End A and End B. Is this possible as I can't seeem to find the option in the results "tab"?.
I know that the results exists, as I can see the bar element results for bending moment at end A and end B in my...
Hi,
Almost embarrased to ask this question but can't work out how to do this anymore.
I want to display in Patran, as a vector, the bending moment of a bar element at End A and End B.
I know that the results exists, as I can see the bar element results for bending moment at end A and end...
Hi All,
Recently I modelled a plate with a small amount of curvature - i.e like an aircraft window. It has a uniform pressure applied to it. Around the edges grounded celas1 elements have been used with stiffness in the out of plane direction only, these elements simulate the rubber window...
Hi All,
I’ve been recently analyzing a tension fitting with pre torqued bolts.
I haven’t seen anything on the effect of shim’s when checking Gapping. Do shim’s have a detrimental effect on the gapping load? Any references to look at?
Also, when I got up to checking the bolt itself, the...
I have been researching the effect of stress concentrations on the ultimate strength of a cross section and I have not been able to find an electronic copy of the following documents.
NACA-TN-1830 "Tension properties of aluminium alloys in the prescence of stress raisers"
and
NACA-TN-1974...
Hi Guys,
What methods do people use to determine if a part has failed (i.e broken into two bits) when doing an linear-elastic analysis.
When no stress concentration are present this is straight forward as you compare maximum model stress with the ultimate tensile strength of the material...
