BIOMECHANICAL PROPERTIES OF DINOSAUR EGGSHELLS (111) ——THE MECHANIC ANALYSIS OF THE BABY DINOSAURS' EMERGING FROM THEIR EGGS

Vertebrata Palasiatica ›› 1995, Vol. 33 ›› Issue (02): 160-167.

BIOMECHANICAL PROPERTIES OF DINOSAUR EGGSHELLS (111) ——THE MECHANIC ANALYSIS OF THE BABY DINOSAURS' EMERGING FROM THEIR EGGS

Ma Hezhong, She Dewei , Zhao Zikui

Online:1995-06-15 Published:1995-06-15

恐龙蛋壳的生物力学性质(III)——恐龙幼雏出壳时蛋壳破裂的力学分析

马和中, 佘德伟, 赵资奎

Abstract

Abstract: Summary can be seen in PDF.

摘要： 龙幼雏出壳时并不象鸟类那样用喙向蛋壳施加集中载荷，而是施加分布载荷。根据已建立的微分方程，恐龙蛋壳的环向应力σθ始终大于沿母线方向的应力σФ。而成为壳内的最大应力。蛋壳破裂的力学判据是: σθ≥σ破坏。本文研究了四种恐龙蛋在幼雏出壳时幼雏的挤压力所造成的蛋壳应力。结果表明四种恐龙幼雏出壳时首先出现沿母线方向的裂纹以造成蛋壳的断裂，其最大环向应力和沿母线方向的应力均出现在蛋壳的最大直径附近。以Ovaloolithus为代表的A型蛋的应力最小，最不容易破碎，幼雏出壳时，可能比较困难。

Ma Hezhong, She Dewei , Zhao Zikui. BIOMECHANICAL PROPERTIES OF DINOSAUR EGGSHELLS (111) ——THE MECHANIC ANALYSIS OF THE BABY DINOSAURS' EMERGING FROM THEIR EGGS. Vertebrata Palasiatica, 1995, 33(02): 160-167.

马和中, 佘德伟, 赵资奎. 1995, 33(02): 160-167, 恐龙蛋壳的生物力学性质(III)——恐龙幼雏出壳时蛋壳破裂的力学分析. 古脊椎动物学报.