美国麻省理工大学：《结构分析与设计技术》教学资源（讲义）CQ17

Concept Question Which of the following are real problems with the ritz method 1. Selection of basis functions for general ge- metres 2. Lack of systematic procedure to compute stiff atrix and forcing terms 3. Selection of basis functions that do not en force spurious displacement boundary con ditions 4. No problems, Ritz method is"the ultimate we should stick with it None of the above statements all of the above statements all of the above statements but Statement DKDU

++++ ++++ ++++ ++++ ++++ Concept Question ++++ ++++ ++++ ++++ ++++ Which of the following are real problems with the Ritz method: 1. Selection of basis functions for general ge￾ometries. 2. Lack of systematic procedure to compute stiffness matrix and forcing terms. 3. Selection of basis functions that do not en￾force spurious displacement boundary con￾ditions. 4. No problems, Ritz method is “the ultimate” we should stick with it. • ++++ None of the above statements • ++++ All of the above statements • ++++ All of the above statements but (4) • ++++ Statement (4) • ++++ DKDU

The correct answer is

The correct answer is ++++