1 – PURPOSE
The purpose of this document is to demonstrate that the holes that are closer to the edges at the interface
between Base Frame and Insulator (highlighted in Fig.1) are subjected to a Stress State that is very low
compared to the mechanical properties of the Base Frame material.
1.1 – Disconnector reference drawings
COELME-EGIC drawing no. B55083EEDC01 : “DISCONNECTOR TCB 245-4000”,
2 – MODEL, LOADS AND CONSTRAINTS
The simplified model represented in Fig.1 has been assumed for the investigation. The Max Allowed Terminal
Loads, Longitudinal (L) and Transversal (T), have been implemented one by one. Because the effect of the
Longitudinal (L) Load is negligible in correspondence of the holes that are in the scope of this investigation, only
the results relative to the Transversal (T) Load have been reported.
The implemented value of the Load in Y-direction (T) is 3000N, which corresponds to the Max Allowed Dynamic
Terminal Load.
The feet of the U-bended plate have been considered as fixed
2.1 – Calculation program
The finite element calculation have been made with the well known calculation program named:
SolidWorks Simulation 2011 x64 SP3.0
3 – MATERIALS
The Base Frame is made of structural steel (see par.3.1).
3.1 – Steel
Fe360B according to UNI 7070.
Mechanical properties:
Es = 210000 MPa
ν = 0.28 (poisson's ratio)
5 – CONCLUSIONS
The Stress States represented in Fig.2 reveal that the distance from the edges of the two holes that have been
investigated is more than adequate. If the Dynamic Transversal Load is applied in the same way of a static one,
therefore considering a very conservative approach, the maximum stresses at the investigated areas are lower
than 75% of the material yield stress
1 – PURPOSE The purpose of this document is to demonstrate that the holes that are closer to the edges at the interface between Base Frame and Insulator (highlighted in Fig.1) are subjected to a Stress State that is very low compared to the mechanical properties of the Base Frame material. 1.1 – Disconnector reference drawingsCOELME-EGIC drawing no. B55083EEDC01 : “DISCONNECTOR TCB 245-4000”,2 – MODEL, LOADS AND CONSTRAINTSThe simplified model represented in Fig.1 has been assumed for the investigation. The Max Allowed Terminal Loads, Longitudinal (L) and Transversal (T), have been implemented one by one. Because the effect of the Longitudinal (L) Load is negligible in correspondence of the holes that are in the scope of this investigation, only the results relative to the Transversal (T) Load have been reported. The implemented value of the Load in Y-direction (T) is 3000N, which corresponds to the Max Allowed DynamicTerminal Load. The feet of the U-bended plate have been considered as fixed2.1 – Calculation program The finite element calculation have been made with the well known calculation program named:SolidWorks Simulation 2011 x64 SP3.03 – MATERIALS The Base Frame is made of structural steel (see par.3.1).3.1 – Steel Fe360B according to UNI 7070.Mechanical properties: Es = 210000 MPa ν = 0.28 (poisson's ratio)5 – CONCLUSIONS The Stress States represented in Fig.2 reveal that the distance from the edges of the two holes that have been investigated is more than adequate. If the Dynamic Transversal Load is applied in the same way of a static one,
therefore considering a very conservative approach, the maximum stresses at the investigated areas are lower
than 75% of the material yield stress
การแปล กรุณารอสักครู่..