Personal CAD Project: Pantheon [1]

Transcription

1 Personal CAD Project: Pantheon [1] Clare McHugh Engineering Design 100 Section April 2016

2 Having studied the ancient Roman culture and the Latin language for many years, my personal CAD project was a recreation of the Roman Pantheon. The Pantheon, one of the most well preserved ancient structures found in Rome, was built between 118 and 125 A.D. as a temple dedicated to all the pagan gods of the Roman people. While aligning with my personal interests, the Pantheon is also an architectural and engineering feat as it remains the largest unsupported dome in the world. This engineering ingenuity of the Roman people helped inspire my own personal interest in the field. Therefore, I thought it appropriate to combine both my personal and career interests within the personal CAD project and recreate the Pantheon. The CAD model has three different structures and twenty parts total in the assembly. I began by creating the column that would serve to represent the eighteen columns that hold the structure. These were created with the loft technique using two different circles created on two top planes. These column were then each mated to the extruding pediment feature in the same manner as the actual Roman Pantheon. Figure 1 Column feature of the Pantheon The second pediment feature of the Pantheon was created first by extruding a rectangular base and triangular top. To create the overhang effect, the sides of the bottom of the pediment were extruded with the cut extrude feature. Furthermore, for the effect of the angled interior of the front of the pediment, the cut extrude feature was used and set at an angle. For the inscription on the base of the pediment, the texting feature to write M AGRIPPA L F COS TERTIUM FECIT, which can be translated to Marcus Agrippa, son of Lucius, in his third consulate, made it. The text was then extruded to create the visual effect. The detailing of the pediment, which is found along the edging, was created by first creating a small square feature on the base of the pediment. After extruding this feature, a linear pattern was implemented across the base of the pediment. This technique was similarly employed on the angled edges of the pediment. Following the construction of the pediment, it was mated to the front of the dome feature of the Pantheon. Figure 2 Pediment feature of the Pantheon

3 The largest and most complex aspect of the construction, the dome, was first created through a sketch on the front plane. The outline of the structure, after revolving it around a centerline, was then detailed to greater resemble the Roman architecture. After using the shell technique to remove the interior material from the structure, the oculus, or hole, at the top of the structure was created through the cut-extrude technique. Transitioning to the front of the dome, a rectangular sketch was created on the front plane and subsequently extruded up to the face of the dome. The top edges, a triangular pediment, and the sides of the extruded feature were further extruded to create an overhang effect. Similar to the pediment, material on the edges and triangular pediment features was extruded in a square shape and a linear pattern was used on these faces to replicate the simple geometric design. Finally, the pattern around on the dome on the top and middle edges of the dome was created by a simple square sketch on the front plane. Using a revolve cut, the effect was created, and using the circular pattern feature, both edges were effectively detailed. Finally, two arch ways and an entrance were placed on the front of the extruded section by using an extruded cut. Figure 3 Dome feature of the Pantheon A tan limestone was chosen as the material for all of the separate parts to replicate the actual Pantheon structure, and the flooring of the entrance to the Pantheon was chosen to be a granite. The dome structure was definitely the most difficult aspect to complete. It required the utilization of many different features, some of which I had little to no experience with before beginning the project. These features include: the revolve cut, linear pattern, and circular pattern. Moreover, I learned to utilize some features in a new manner, such as the angled feature on the cut-extrude and the up to surface option in the boss/extrude feature. I also employed the lettering sketch feature, which I had no experience with before the beginning of the project.

4 Having no experience with CAD modeling or SolidWorks prior to the start of the class, I learned a great deal over the course of the semester about its many features and the advantages the technology can provide. Throughout the course, the many tutorials provided me with valuable lessons in the functioning of SolidWorks, and I have a much greater understanding of the various functions of the program. Furthermore, I feel much more confident in my ability to utilize the technology in the future. Figure 4 CAD model of the Roman Pantheon

5 Picture Reference [1] Roman Pantheon. Digital image. Rolling Rome. N.p., n.d. Web. 1 Apr < References Low, Kristina N. "Engineering the Pantheon." Engineering Rome. N.p., 18 Sept Web. 1 Apr < +Architectural,+Construction,+%26+Structural+Analysis>.