Hy to everyone,
I have a problem with Scott and Fenves' finite element, which i am using to model beams/columns
members in a 2D Frame in OpenSees.
I've evaluated the Plastic Hinge Length "Lp" using Paulay and Priestley (1992) formulation,
but in this way i found a high axial deformability of the element even for gravitational loads only.
In Opensees wiki example: Pushover Analysis of 2-Story Moment Frame,
0.004*(Element Length) is used to evaluate the same Plastic Hinge Length.
In this way you obtain a smaller plastic hinge lenght (one order of magnitude) than that calculated with Paulay and Priestley (1992) formulation.
My questions are:
1) Which of the two formulations is more appropriate?
2) How can I neglect the axial stiffness using Scott and Fenves' finite element?
Thanks in advance for your reply and for your availability.
Search found 3 matches
- Thu Feb 11, 2021 2:35 pm
- Forum: Reliability Analysis
- Topic: Plastic hinge length in Beam with hinge element
- Replies: 1
- Views: 11251
- Thu Feb 04, 2021 5:23 am
- Forum: OpenSees.exe Users
- Topic: Beam with hinges elements - Scott and Fenves
- Replies: 0
- Views: 6496
Beam with hinges elements - Scott and Fenves
Hy to everyone,
I have a problem with Scott and Fenves' finite element, which i am using to model beams/columns
members in a 2D Frame in OpenSees.
I've evaluated the Plastic Hinge Length "Lp" using Paulay and Priestley (1992) formulation,
but in this way i found a high axial deformability of the element even for gravitational loads only.
In Opensees wiki example: Pushover Analysis of 2-Story Moment Frame,
0.004*(Element Length) is used to evaluate the same Plastic Hinge Length.
In this way you obtain a smaller plastic hinge lenght (one order of magnitude) than that calculated with Paulay and Priestley (1992) formulation.
My questions are:
1) Which of the two formulations is more appropriate?
2) How can I neglect the axial stiffness using Scott and Fenves' finite element?
Thanks in advance for your reply and for your availability.
I have a problem with Scott and Fenves' finite element, which i am using to model beams/columns
members in a 2D Frame in OpenSees.
I've evaluated the Plastic Hinge Length "Lp" using Paulay and Priestley (1992) formulation,
but in this way i found a high axial deformability of the element even for gravitational loads only.
In Opensees wiki example: Pushover Analysis of 2-Story Moment Frame,
0.004*(Element Length) is used to evaluate the same Plastic Hinge Length.
In this way you obtain a smaller plastic hinge lenght (one order of magnitude) than that calculated with Paulay and Priestley (1992) formulation.
My questions are:
1) Which of the two formulations is more appropriate?
2) How can I neglect the axial stiffness using Scott and Fenves' finite element?
Thanks in advance for your reply and for your availability.
- Tue Oct 13, 2020 7:45 am
- Forum: OpenSees.exe Users
- Topic: How To assign Joint 2D element in OpenSees Navigator
- Replies: 0
- Views: 5799
How To assign Joint 2D element in OpenSees Navigator
Hi to everyone,
How can I assign Joint2D in OpenSees Navigator? In the Tcl command, I should define 4 external nodes, a central node, and the material behavior at each node. but in OpenSees Navigator, when I define a joint2D element, the software ask just for the material behavior at the external and central nodes without asking about there labels.
Thanks in advance for your help!
How can I assign Joint2D in OpenSees Navigator? In the Tcl command, I should define 4 external nodes, a central node, and the material behavior at each node. but in OpenSees Navigator, when I define a joint2D element, the software ask just for the material behavior at the external and central nodes without asking about there labels.
Thanks in advance for your help!