How do thermal expansion coefficients affect the assembly of mixed-metal animal sculptures?

Thermal expansion coefficients play a critical role in the assembly of mixed-metal animal sculptures, as different metals expand and contract at varying rates with temperature changes. When metals like bronze, steel, or aluminum are combined, mismatched expansion can lead to structural stress, warping, or even fractures over time. Sculptors and engineers must carefully select compatible metals or incorporate flexible joints to accommodate these differences. Techniques such as bimetallic bonding or thermal gap allowances help prevent long-term damage. Understanding these principles ensures the durability and artistic integrity of intricate metal sculptures exposed to outdoor or fluctuating environments.