ASME的案例2695

對于一些局部分析，GB150允許采用分析設計。那么在A(yíng)SME中是否也有類(lèi)似的規定呢？

ASME的案例2695允許使用VIII 2設計規則應用于VIII 1的壓力容器，對于其具體如何執行，委員會(huì )給出了一些回答，我試著(zhù)翻譯一下。

Case 2695

Code Case to Allow Section VIII Division 2 Design Rules to be used for a Section VIII Division 1 Pressure Vessel

2695允許使用VIII 2設計規則應用于VIII 1的壓力容器。

Inquiry: Under what conditions may the Design-By-Rule Requirements in Part 4 of Section VIII Division 2 be used to design components for a Section VIII Division 1 Pressure Vessel?

問(wèn)題：什么情況下允許將VIII 2 part4的按規則設計的要求應用于 VIII 1壓力容器部件的設計。

Reply: It is the opinion of the Committee that the Design-By-Rule Requirements in Part 4 of Section VIII Division 2 may be used to design components for a Section VIII Division 1 Pressure Vessel, provided the following conditions are met：

回答：委員會(huì )的意見(jiàn)是在以下的情形下，VIII 2 part4的按規則設計的要求可以應用于 VIII 1壓力容器部件的設計。

a) The allowable design tensile stress shall be in accordance with UG-23 of Section VIII Division 1.

允許設計拉伸強度按照VIII 1的UG-23.（UG-23內容是最大許用應力值）

b) The weld joint efficiency shall be established in accordance with UW-11 and UW-12 of Section VIII Division 1.

焊接接頭系數符合VIII 1的UW-11和UW-12（UW-11射線(xiàn)及超聲波檢測，UW-12為接頭系數）

c) Material impact test exemptions shall be in accordance with the rules of Section VIII Division 1.

材料沖擊試驗豁免按照VIII 1的規則。（沖擊試驗豁免參照VIII 1 UG-20（f））

d) If the thickness of a shell section or formed head is determined using Section VIII Division 2 design rules, then;

如果殼體或者成型封頭的厚度采用VIII 2設計規則，則：

1) For design of nozzles, any nozzle and its reinforcement attached to that shell section or formed head shall be designed in accordance with Section VIII Division 2,

在殼體或成型封頭上的接管的設計以及所有接管及其補強圈都需要按照VIII 2進(jìn)行設計。

2) For conical transitions, each of the shell elements comprising the junction and the junction itself shall be designed in accordance with Section VIII Division 2,

錐體過(guò)渡區，每段殼體元件組成的連接以及連接本身需要按照VIII 2進(jìn)行設計。

3) For material impact test exemptions, the required thickness used in the coincident ratio defined in Section VIII Division 1 shall be calculated in accordance with Section VIII Division 2.

對于材料沖擊試驗的豁免，按照VIII I規定的控制厚度的比值應該按照VIII2卷計算。（比值就是按照UCS-66確定厚度的比值，也就是材料所受的應力比，見(jiàn)UCS-66圖）

e) The fatigue analysis screening in accordance with Part 4, paragraph 4.1.1.4 of Section VIII Division 2, is not required. However, it may be used when required by UG-22 of Section VIII Division 1.

依照VIII 2的第四章，4.1.1.4節的疲勞分析篩選是不需要的。然而，它可以使用在當VIII 1 UG-22需要的時(shí)候。（UG-22設計需要考慮的載荷工況）

f) The provisions shown in Part 4 of Section VIII Division 2, to establish the design thickness and/or configuration using the Design-by-Analysis procedures of Part 5 of Section VIII Division 2 is not permitted.

VIII 2 第四章中的規定，使用VIII 2 第五章按照分析設計流程來(lái)確定設計厚度或結構時(shí)不允許的。

g) The Design Loads and Load Case Combinations specified in Part 4, paragraph 4.1.5.3 of Section VIII Division 2 are not required.

按照VIII 2第四章， 4.1.5.3考慮設計載荷和載荷組合是不必要的。

h) The primary stress check specified in Part 4, paragraph 4.1.6 of Section VIII Division 2, is not required.

按照VIII 2第四章， 4.1.6進(jìn)行主應力校核是不必要的。

i) Weld Joint details shall be in accordance with Part 4, paragraph 4.2 of Section VIII Division 2, with the exclusion of Category E welds.

除了E類(lèi)焊縫，詳細焊接節點(diǎn)要按照VIII2 第四章 4.2節.

j) The fabrication tolerances specified in Part 4, paragraphs 4.3 and 4.4 of Section VIII Division 2 shall be satisfied. The provision of evaluation of vessels outside of tolerance per Part 4, paragraph 4.14 of Section VIII Division 2 is not permitted.

要滿(mǎn)足VIII 2第四章4.3和4.4節中的制造公差要求。公差超過(guò)VIII2第四章4.14節的規定是不允許的。

k) The vessel and vessel components designed using these rules shall be noted on the Manufacturer's Data Report.

容器及容器組件設計如果使用這些規則，要在制造數據報告中標識。

l) All other requirements for construction shall comply with Section VIII Division 1.

其余建造要求要符合VIII 1。

m) This Code Case Number shall be shown on the Manufacturer's Data Report.

規范案例號要標示在制造數據報告中。

在PVElite中可以根據需要勾選是否選用此案例，路徑為tool->set configuration parameters。

此案例大吼一聲：我要有效省電30%