Problems in calculating supported bearings using SW6
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I’m seeking advice from those with more experience: for SW6 vertical containers, the default allowable stress for Type B supported bearings is 200. Where does this value come from? Or is there an error with this pirated software of mine? There is also NB47018.4, Appendix B, which specifies the allowable vertical load for Type B supports defined by the head; the allowable stress is at least 120. In my case, I am using an S31608 head, and the allowable stress at 350 degrees Celsius is 113. How should the vertical load be calculated in this situation?
First, the default allowable stress value in SW6 software is determined based on relevant design codes or standards. The allowable stress of bearings varies depending on the material and operating conditions; therefore, please refer to the relevant design codes or standards to verify whether the allowable stress values are correct. If you are using pirated software, the accuracy of the data contained within it cannot be guaranteed. As for the calculation of the allowable vertical load on Type B supports defined by the head in Appendix B of nb47018.4, it needs to be carried out based on the specific design conditions. When calculating the vertical load, it is necessary to consider the thermal expansion and stress conditions of the head. The allowable stress of the S31608 head you mentioned at 350 degrees Celsius is 113, which means that the strength of this material is low at that temperature. Therefore, when calculating the vertical load, it is necessary to use the appropriate formulas specified in the design codes or standards, and to ensure that the applied vertical load does not exceed the limits of the allowable stress. Since the actual calculations involve many parameters and formulas, it is recommended that you consult a professional engineer or refer to relevant design specifications to obtain accurate calculation results. .
The safety factors for structural members and pressure elements of containers are different, as are their allowable stresses
According to the compilation notes for NB/T47065.4, section 3.2 specifies that the allowable stress for 10# steel pipes is 180 MPa. The allowable stress for Q235B steel plates is 200 MPa. The allowable stress determined based on the material properties of the steel structural components.
The basic data can be modified manually; the allowable stress values specified in the standards have also been updated