In a delta strain rosette problem, the classification as a plane stress or plane strain problem depends on the context of the normal strains provided. The discussion leans towards identifying it as a plane stress problem, suggesting that the analysis is relevant in scenarios where out-of-plane stresses are negligible. The term "plain" is clarified to mean "unadorned," reinforcing the focus on the basic definitions. Ultimately, the consensus is that the problem should be treated as a plane stress scenario. Understanding these distinctions is crucial for accurate stress and strain analysis in engineering applications.
